taxonID	type	description	language	source
8D1B879FFFA5AF12CD94F9A9FBDFF87B.taxon	description	Figs. 1 – 5, 85 – 88, 95	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFA5AF12CD94F9A9FBDFF87B.taxon	materials_examined	Type locality. South Africa, Mpumalanga Province, Mariepskop, 24 ° 35 ' S, 30 ° 50 ' E. Type material examined. Paratype ♂: “ S. Afr., E. Transvaal / Mariepskop / 24.35 S – 30.50 E ”, “ 6.5.1981; E-Y: 1785 / sifting / leg. Endrödy-Younga ”, “ ♂ — Paratypus (top side) Puthz, 2005 (bottom side) ” [yellow], “ Octavius / attenuatus sp. n. / det. Puthz 2005 ” (JJRC). Material examined (383 specimens). SOUTH AFRICA: Mpumalanga: 3 ♂, 184 ♂ or ♀: Mariepskop forest reserve, fynbos 1, ca. 1900 m, 25. xi. 2023, 24 ° 33.10 ' S 30 ° 52.33 ' E, J. Janák lgt. (JJRC); 3 ♂, 69 ♂ or ♀: Mariepskop forest reserve, fynbos 2, ca. 1900 m, 25. xi. 2023, 24 ° 33.17 ' S 30 ° 52.20 ' E, J. Janák lgt. (JJRC); 17 ♂, 17 ♀, 90 ♂ or ♀: Mariepskop forest reserve, ind. forest, 1645 m, 25. xi. 2023, 24 ° 33.9 ' S 30 ° 51.7 ' E, J. Janák lgt. (JJRC).	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFA5AF12CD94F9A9FBDFF87B.taxon	discussion	Note. The examined specimens correspond well to the description and illustration published by Puthz (2006).	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFA5AF12CD94F9A9FBDFF87B.taxon	distribution	Distribution. The species is currently known from Mt. Mariepskop in Mpumalanga Province, South Africa (Fig. 95).	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFA5AF12CD94F9A9FBDFF87B.taxon	biology_ecology	Bionomics. All examined specimens were collected in siftings of litter in an indigenous forest at the elevation of about 1645 m and in a fynbos at the elevation of about 1900 m a. s. l. and with the abundance of specimens per kg of sifted material: fynbos 1: 26.0 / kg, fynbos 2: 14.1 / kg, forest: 19.4 / kg (Figs. 85 – 88).	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFA7AF13CD94FF09FE02F970.taxon	description	Figs. 6 – 10, 84, 95	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFA7AF13CD94FF09FE02F970.taxon	materials_examined	Type locality. South Africa, Mpumalanga, Songimvelo Nature Reserve, 25 ° 56.7 ', S 31 ° 6.4 ' E. Type material (57 specimens). Holotype ♂: “ RSA, Mpumalanga 18. xi. 2023 / 25 ° 56.7 ' S 31 ° 6.4 ' E, / Songimvelo NR, ind. forest / 1340 m, J. Janák lgt. ”, “ Berlese extraction / leaf & log litter / sifting ”, “ HOLOTYPUS Octavius barbetonensis sp. nov. J. Janák det. 2025 ” (TMSA); Paratypes: 17 ♂, 28 ♀: same data as the holotype (JJRC, PPRI, 1 ♂ stored in 96 % alcohol); 3 ♂, 8 ♀: “ RSA, Mpumalanga 16. xi. 2023 / 25 ° 56.6 ' S 31 ° 6.3 ' E, ind. for. / Songimvelo NR borders / 1470 m, J. Janák lgt. ”, “ Berlese extraction / leaf & log litter / sifting ” (JJRC). All paratypes with additional labels: “ PARATYPUS Octavius barbetonensis sp. nov. J. Janák det. 2025 ”.	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFA7AF13CD94FF09FE02F970.taxon	description	Description. Body length 1.4 – 1.8 mm (M 1.5 mm, HT 1.4 mm), forebody length 0.7 – 0.8 mm (M 0.7 mm, HT 0.7 mm). Microphthalmous, apterous, light rusty, head and pronotum dull, elytra and abdomen moderately shiny (Fig. 6). Head (Fig. 6) slightly narrower than pronotum (R 0.91 – 0.94, M 0.92, HT 0.93), eyes very small, temples about five times as long as eyes (R 4.40 – 5.18, M 4.82, HT 5.12), sides of head very slightly rounded, slightly widened behind eyes to maximal width, then moderately narrowed towards posterior angles, posterior angles moderately angular, elongate median impression on disc deep, sometimes shortened anteriorly and posteriorly, lateral parts of head finely granulose, median part densely and moderately finely reticulate. Pronotum (Fig. 6) slightly broader than long (R 1.07 – 1.13, M 1.10, HT 1.09), strongly narrowed posteriorly; anterior angles rounded, dorsal impressions deep, transverse impression shallow or deep, lateral impressions deep, not delimited by sharp longitudinal ridge laterally; lateral parts beside lateral impressions moderately densely granulose, remainder of surface moderately densely and finely reticulate. Elytra (Fig. 6) subquadrate, much broader than long (R 1.34 – 1.49, M 1.40, HT 1.49), with two sharp longitudinal ridges laterally; between latter and suture with two longitudinal impressions, irregularly granulate, moderately reticulate and sparsely shortly setose. Abdomen subparallel, slightly widened to segment V or VI, with one paratergite and microsculpture consisting of triangular or rhomboid field, finely setose. Male. Sternite VIII shallowly emarginate in posterior tenth (Fig. 9), sternite IX as in Fig. 10. Aedeagus strongly asymmetrical, moderately long (0.40 – 0.41 mm, M 0.41 mm, HT 0.40 mm) and wide, with narrow hook-shaped projection, with two strongly sclerotised internal structures, first one long, narrowed and rounded apically and second one shorter with small point apicolaterally; parameres slightly shorter than median lobe, with two setae in apical two third and 4 – 5 subapicolateral setae (Figs. 7 – 8).	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFA7AF13CD94FF09FE02F970.taxon	diagnosis	Differential diagnosis. Octavius barbetonensis Janák, sp. nov. belongs among species with very small eyes, with temples at about five times as long as eyes, with the head not or at most slightly widened posteriorly, with small body and the disc of the head with a median impression. In the most recent key of South African Octavius (Janák 2014) is to be arranged at the couplet 94 (95) near O. trihastatus Puthz, 2006 and O. mostovskii Janák, 2014, but it differs from the first species by dull, less transverse pronotum with shallower transverse impression, from the second species by presence of median impression of head and from both by different shape of aedeagus.	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFA7AF13CD94FF09FE02F970.taxon	etymology	Derivatio nominis. This species refers to the type locality situated near the town Barbeton.	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFA7AF13CD94FF09FE02F970.taxon	distribution	Distribution. Octavius barbetonensis Janák, sp. nov. is currently recorded only from the Songimvelo Nature Reserve and its surroundings, Mpumalanga Province, South Africa (Fig. 95). Bionomics. All specimens were collected in siftings of forest litter in an indigenous forest at the elevation of about 1300 – 1500 m a. s. l. (Fig. 84) with the abundance of specimens per kg of sifted material: 1340 m a. s. l.: 4.1 / kg, 1470 m a. s. l.: 2.6 / kg).	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFA7AF15CD94F891FD1CFA98.taxon	description	Figs. 11 – 15, 89, 95	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFA7AF15CD94F891FD1CFA98.taxon	materials_examined	Type locality. South Africa, Mpumalanga, Nelshoogte forestry, 25 ° 45.15 ' S, 30 ° 51.0 ' E. Type material (7 specimens). Holotype ♂: “ RSA, Mpumalanga 17. xi. 2023 / 25 ° 45.15 ' S 30 ° 51.0 ' E, / Nelshoogte forestry, nr. R 38 [= national road 38] / 1180 m, J. Janák lgt. ”, “ small patch of Acacia trees / Berlese extraction / logs and litter / sifting ”, “ HOLOTYPUS Octavius hamifer sp. nov. J. Janák det. 2025 ” (TMSA). Paratypes: 2 ♂, 4 ♀: same data as the holotype (JJRC, PPRI). All paratypes with additional labels: “ PARATYPUS Octavius hamifer sp. nov. J. Janák det. 2025 ”.	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFA7AF15CD94F891FD1CFA98.taxon	description	Description. Body length 1.2 – 1.7 mm (M 1.4 mm, HT 1.3 mm), forebody length 0.6 – 0.7 mm (M 0.6 mm, HT 0.6 mm). Microphthalmous, apterous, rusty, head and pronotum dull, elytra and abdomen moderately shiny (Fig. 11). Head (Fig. 11) slightly narrower than pronotum (R 0.87 – 0.95, M 0.93, HT 0.93), eyes very small, temples about 3 – 4 times as long as eyes (R 3.09 – 4.33, M 3.73, HT 3.50), sides of head straight or very slightly rounded, not or slightly widened behind eyes to maximal width, then moderately narrowed towards posterior angles, posterior angles angular, median impression on disc shallow, shortened anteriorly and posteriorly, lateral parts of head finely granulose, median part densely and moderately finely reticulate. Pronotum (Fig. 11) slightly broader than long (R 1.10 – 1.20, M 1.15, HT 1.11), strongly narrowed posteriorly; anterior angles rounded, dorsal impressions moderately deep, transverse impression deep, lateral impressions deep, not delimited by sharp longitudinal ridge laterally; lateral parts beside lateral impressions moderately densely granulose, remainder of surface moderately densely and finely reticulate. Elytra (Fig. 11) subquadrate, much broader than long (R 1.30 – 1.54, M 1.43, HT 1.30), with two sharp longitudinal ridges laterally; between latter and suture with two longitudinal impressions, irregularly granulate, moderately reticulate and sparsely shortly setose. Abdomen subparallel, slightly widened to segment V, with one paratergite and microsculpture consisting of triangular or rhomboid field, finely setose. Male. Sternite VIII deep triangularly emarginated in posterior fifth (Fig. 14), sternite IX as in Fig. 15. Aedeagus strongly asymmetrical, moderately long (0.34 – 0.35 mm, M 0.35 mm, HT 0.35 mm) and moderately wide, with narrow projection, with elongate apically bent sclerotised internal structures; parameres slightly shorter than median lobe, with three or four setae in apical two third and about 5 subapicolateral setae (Figs. 12 – 13).	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFA7AF15CD94F891FD1CFA98.taxon	diagnosis	Differential diagnosis. Octavius hamifer Janák, sp. nov. belongs among species with very small eyes, with temples at about 3 – 4 times as long as eyes, with the head not or at most slightly widened posteriorly, with small body and the disc of the head with a shallow incomplete median impression. In the most recent key of South African Octavius (Janák 2014) is to be arranged at the couplet 99 (100) or 100 (99) near O. ocellifer Puthz, 2006 and O. muellerae Janák, 2014, but it differs from both these by different shape of aedeagus and shallow median impression on disc of head.	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFA7AF15CD94F891FD1CFA98.taxon	etymology	Derivatio nominis. The name hamifer is a compound Latin word meaning hook-bearer and refers to the shape of the median lobe of the aedeagus.	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFA7AF15CD94F891FD1CFA98.taxon	distribution	Distribution. Octavius hamifer Janák, sp. nov. is currently recorded only from the Nelshoogte forestry, Mpumalanga Province, South Africa (Fig. 95). Bionomics. All specimens were collected in siftings of forest litter in a small forest patch of forest with Acacia trees at the elevation of about 1180 m a. s. l. surrounding by Eucalyptus plantation with the abundance of 3.2 specimens per kg of sifted material (Fig. 89).	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFA1AF16CD94FA39FB10FBB0.taxon	description	Figs. 16 – 21, 83, 95	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFA1AF16CD94FA39FB10FBB0.taxon	materials_examined	Type locality. South Africa, Mpumalanga, SW Josefsdal, 25 ° 57.0 ' S, 31 ° 6.65 ' E. Type material (8 specimens). Holotype ♂: “ RSA, Mpumalanga 16. xi. 2023 / 25 ° 57.0 ' S 31 ° 6.65 ' E, ind. / forest, SW Josefsdal, nr. R 40 / 1340 m, J. Janák lgt. ”, “ Berlese extraction / leaf & log litter / sifting ”, “ HOLOTYPUS Octavius hastifer sp. nov. J. Janák det. 2025 ” (TMSA); Paratypes: 6 ♂, 1 ♀: same data as the holotype (JJRC, PPRI). All paratypes with additional labels: “ PARATYPUS Octavius hastifer sp. nov. J. Janák det. 2025 ”.	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFA1AF16CD94FA39FB10FBB0.taxon	description	Description. Body length 1.2 – 1.6 mm (M 1.4 mm, HT 1.4 mm), forebody length 0.6 – 0.7 mm (M 0.65 mm, HT 0.6 mm). Microphthalmous, apterous, rusty, head and pronotum dull, elytra and abdomen moderately shiny (Fig. 16). Head (Fig. 16) slightly narrower than pronotum (R 0.92 – 0.95, M 0.94, HT 0.92), eyes very small, temples about 4 times as long as eyes (R 3.78 – 6.15, M 4.66, HT 4.33), sides of head almost straight, very slightly rounded, slightly widened behind eyes to maximal width, then moderately narrowed towards posterior angles, posterior angles rounded, median impression on disc deep, lateral parts of head finely granulose, median part densely and moderately finely reticulate. Pronotum (Fig. 16) slightly broader than long (R 1.08 – 1.18, M 1.13, HT 1.18), strongly narrowed posteriorly; anterior angles rounded, dorsal impressions moderately deep, transverse impression deep, lateral impressions deep, not delimited by sharp longitudinal ridge laterally; lateral parts beside lateral impressions moderately densely granulose, remainder of surface moderately densely and finely reticulate. Elytra (Fig. 16) subquadrate, much broader than long (R 1.31 – 1.45, M 1.39, HT 1.33), with two sharp longitudinal ridges laterally; between latter and suture with two longitudinal impressions, irregularly granulate, moderately reticulate and sparsely shortly setose. Abdomen subparallel, slightly widened to segment V or VI, with one paratergite and microsculpture consisting of triangular or rhomboid field, finely setose. Male. Sternite VIII deep triangularly emarginated in posterior fifth (Fig. 20), sternite IX as in Fig. 21. Aedeagus slightly asymmetrical, moderately long (0.42 – 0.45 mm, M 0.43 mm, HT 0.44 mm) and very narrow, elongated, pointed apically, with long apically elongated pointed sclerotized internal structure; parameres slightly shorter than median lobe, markedly dilated in middle, with two or three setae in apical two thirds and about 4 subapicolateral setae (Figs. 17 – 19).	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFA1AF16CD94FA39FB10FBB0.taxon	diagnosis	Differential diagnosis. Octavius hastifer Janák, sp. nov. belongs among species with very small eyes, with temples at about 4 times as long as eyes, with the head not or at most slightly widened posteriorly, with small body and the disc of the head with a s deep median impression. In the most recent key of South African Octavius (Janák 2014) is to be arranged due to length of the fore body between couplets 94 (95) and 99 (100), but differs from all species listed there mainly by different shape of the aedeagus. The aedeagus is similar to that of O. pugionifer Puthz, 2006 but narrower and longer, widened in the middle and apically with acute more sclerotized internal structure and with markedly widened parameres. The new species differs from the latter species also by the head less widened posteriorly with more rounded temples and with shallower lateral impression on the pronotum.	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFA1AF16CD94FA39FB10FBB0.taxon	etymology	Derivatio nominis. The name hastifer is a compound Latin word meaning spear-bearer and refers to the shape of the median lobe of the aedeagus.	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFA1AF16CD94FA39FB10FBB0.taxon	distribution	Distribution. Octavius hastifer Janák, sp. nov. is currently recorded only from the surroundings of the village Josefsdal, Mpumalanga Province, South Africa (Fig. 95).	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFA1AF16CD94FA39FB10FBB0.taxon	biology_ecology	Bionomics. The type specimens were collected in siftings of forest litter in an indigenous forest at the elevation of about 1340 m a. s. l. with the abundance 1.2 specimens per kg of sifted material (Fig. 83,).	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFA2AF18CD94FB51FEE1FCD8.taxon	description	Figs. 22 – 26, 95	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFA2AF18CD94FB51FEE1FCD8.taxon	materials_examined	Type locality. South Africa, Mpumalanga, Mariepskop, 1900 m. Type material (2 specimens). Holotype ♂: “ RSA (N), Mpumalanga / - 24.5517 S / 30.8721 E / Mariepskop (summit) / 1900 m, mountain fynbos / 16.11.2012 / leg. P. Jałoszyński ”, “ HOLOTYPUS Octavius jaloszynskii sp. nov. J. Janák det. 2025 ” (TMSA). Paratype: 1 ♂: same data as holotype with additional label: “ PARATYPUS Octavius jaloszynskii sp. nov. J. Janák det. 2025 ” (MNHW).	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFA2AF18CD94FB51FEE1FCD8.taxon	description	Description. Body length 1.5 – 1.6 mm (HT 1.6 mm), forebody length 0.7 – 0.8 mm (HT 0.8 mm). Microphthalmous, apterous, rusty, head and pronotum dull, elytra and abdomen shiny (Fig. 22). Head (Fig. 22) markedly narrower than pronotum (R 0.86 – 0.88, HT 0.88), eyes very small, temples about five times as long as eyes (R 4.89 – 5.44, HT 5.44), sides of head rounded, moderately widened behind eyes to maximal width, then moderately narrowed towards posterior angles, posterior angles moderately rounded, median impression deep and long, lateral parts of head moderately granulose, median part densely and moderately finely reticulate. Pronotum (Fig. 22) slightly broader than long (R 1.16 – 1.17, HT 1.17), strongly narrowed posteriorly; anterior angles angular, dorsal impressions deep, transverse impression deep, lateral impressions deep, not delimited by sharp longitudinal ridge laterally; lateral parts beside lateral impressions moderately densely granulose, surface between dorsal impressions sparsely and finely granulate and shallowly reticulate, thus more shiny than remaining surface, anterior part before transverse impression finely and densely reticulate. Elytra (Fig. 22) subquadrate, broader than long (R 1.43 – 1.52, HT 1.43), with two sharp longitudinal ridges laterally; between latter and suture with two impressions, sparsely and coarsely granulate and with remnants of reticulation. Abdomen subparallel, slightly widened to segment V or VI, with one paratergite and very fine microsculpture consisting of triangular or rhomboid field, finely setose. Male. Sternite VIII widely emarginate in posterior sixth (Fig. 25), sternite IX as in Fig. 26. Aedeagus strongly asymmetrical, moderately long (0.55 – 0. 58 mm, HT 0.58 mm), apically with harpoon-shaped projection and with two very narrow and long sclerotized internal structures; parameres slightly shorter than median lobe, with 7 – 8 setae scattered in apical third (Figs. 23 – 24).	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFA2AF18CD94FB51FEE1FCD8.taxon	diagnosis	Differential diagnosis. Octavius jaloszynskii Janák, sp. nov. belongs among species with very small eyes, with temples at about five times as long as eyes, with the head moderately widened posteriorly, with moderate body and the disc of the head with deep median impression. In the most recent key of South African Octavius (Janák 2014) is to be arranged at the couplet 91 (90) near O. endroedyanus Puthz, 2006, but it differs markedly from this species by larger size, presence of deep median impression on the head, more shiny body and by different shape of the aedeagus.	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFA2AF18CD94FB51FEE1FCD8.taxon	etymology	Derivatio nominis. The new species is dedicated to Paweł Jałoszyński, specialist in Scydmaeninae who collected the type specimens.	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFA2AF18CD94FB51FEE1FCD8.taxon	distribution	Distribution. Octavius jaloszynskii Janák, sp. nov. is currently recorded only from the top of Mount Mariepskop, Mpumalanga Province, South Africa (Fig. 95). Bionomics. Both examined specimens were collected in siftings of litter in mountain fynbos at the elevation of about 1900 m a. s. l.	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFACAF19CD94FCF9FDA9FDF0.taxon	description	Figs. 27 – 31, 90, 95	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFACAF19CD94FCF9FDA9FDF0.taxon	materials_examined	Type locality. South Africa, Mpumalanga, Klipkraal forest, 25 ° 2.7 ' S 30 ° 50.95 ' E. Type material (69 specimens). Holotype ♂: “ RSA, Mpumalanga 20. xi. 2023 / 25 ° 2.7 ' S 30 ° 50.95 ' E, / Klipkraal, ind. forest / 1210 m, J. Janák lgt. ”, “ Berlese extraction / leaf & log litter / sifting ”, “ HOLOTYPUS Octavius klipkraalensis sp. nov. J. Janák det. 2025 ” (TMSA). Paratypes: 8 ♂, 11 ♀: same data as the holotype (JJRC); 14 ♂, 36 ♀: “ RSA, Mpumalanga 20. xi. 2023 / 25 ° 2.7 ' S 30 ° 50.65 ' E, / Klipkraal, ind. forest / 1360 m, J. Janák lgt. ”, “ Berlese extraction / leaf & log litter / sifting ” (JJRC, PPRI). All paratypes with additional labels: “ PARATYPUS Octavius klipkraalensis sp. nov. J. Janák det. 2025 ”.	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFACAF19CD94FCF9FDA9FDF0.taxon	description	Description. Body length 1.3 – 1.7 mm (M 1.4 mm, HT 1.6 mm), forebody length 0.6 – 0.7 mm (M 0.7 mm, HT 0.7 mm). Microphthalmous, apterous, rusty, head and pronotum dull, elytra and abdomen slightly (Fig. 27). Head (Fig. 27) slightly narrower than pronotum (R 0.89 – 0.96, M 0.92, HT 0.90), eyes very small, temples about 3 – 4 times as long as eyes (R 3.09 – 4.28, M 3.69, HT 3.90), sides of head straight or very slightly rounded, slightly widened behind eyes to maximal width, then moderately narrowed towards posterior angles, posterior angles angular, median impression on disc deep and long, reaching base of head, lateral parts of head finely granulose, median part densely and moderately finely reticulate. Pronotum (Fig. 27) slightly broader than long (R 1.04 – 1.13, M 1.09, HT 1.13), strongly narrowed posteriorly; anterior angles rounded, dorsal impressions deep, transverse impression moderately deep, lateral impressions deep, not delimited by sharp longitudinal ridge laterally; lateral parts beside lateral impressions moderately densely granulose, surface between dorsal impressions very finely and densely reticulate, more finely than on remainder of surface. Elytra (Fig. 27) subquadrate, much broader than long (R 1.26 – 1.44, M 1.33, HT 1.36), with two sharp longitudinal ridges laterally; between latter and suture with two or three longitudinal impressions, irregularly granulate, moderately reticulate and sparsely shortly setose. Abdomen subparallel, slightly widened to segment V or VI, with one paratergite and microsculpture consisting of triangular or rhomboid field, finely setose. Male. Sternite VIII deep triangularly emarginated in posterior sixth (Fig. 30), sternite IX as in Fig. 31. Aedeagus strongly asymmetrical, moderately long (0.39 – 0.42 mm, M 0.41 mm, HT 0.42 mm) and moderately wide, with one side possessing narrow apically pointed projection, with three sclerotised internal structures: two elongate and one complicated with lateral sharply pointed projection; parameres slightly shorter than median lobe, with about six lateral setae in apical quarter (Figs. 28 – 29).	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFACAF19CD94FCF9FDA9FDF0.taxon	diagnosis	Differential diagnosis. Octavius klipkraalensis Janák, sp. nov. belongs among species with very small eyes, with temples at about 3 – 4 times as long as eyes, with the head not or at most slightly widened posteriorly, with small body and the disc of the head with a deep and long median impression. In the most recent key of South African Octavius (Janák 2014) is to be arranged at the couplet 95 (94) near O. mostovskii Janák, 2014, but it differs from this species by presence of the median impression on head, deeper dorsal impression on the pronotum and by different shape of the aedeagus.	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFACAF19CD94FCF9FDA9FDF0.taxon	etymology	Derivatio nominis. This species refers to the type locality – Klipkraal forest.	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFACAF19CD94FCF9FDA9FDF0.taxon	distribution	Distribution. Octavius klipkraalensis Janák, sp. nov. is currently recorded only from the Klipkraal forest, Mpumalanga Province, South Africa (Fig. 95).	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFACAF19CD94FCF9FDA9FDF0.taxon	biology_ecology	Bionomics. All specimens were collected in siftings of forest litter in forest patches of an indigenous forest at the elevation of about 1200 – 1400 m a. s. l. (Fig. 90, the abundance of specimens per kg of sifted material: 1210 m a. s. l.: 1.7 / kg, 1340 m a. s. l.: 6.2 / kg).	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFADAF19CD94FD11FBA6FB78.taxon	description	Figs. 32 – 36, 95	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFADAF19CD94FD11FBA6FB78.taxon	materials_examined	Type locality. South Africa, Limpopo Province, Pietersburg [= Polokwane] District, Woodbush forest. Material examined (5 specimens). SOUTH AFRICA: Limpopo: 2 ♂: Nelshgoogte Forest, 25.15 S – 30.50 E, 11.2.1987, E-Y: 2447, sifting, Endrödy-Younga (JJRC); 2 ♂, 1 ♀: Nelshgoogte Forest, 25.15 S – 30.50 E, 5.12.1986, E-Y: 2355, sifting, Endrödy-Younga (JJRC).	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFADAF19CD94FD11FBA6FB78.taxon	discussion	Note. The examined specimens correspond well to the description and illustration published by Kistner (1967).	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFADAF19CD94FD11FBA6FB78.taxon	distribution	Distribution. The species is currently known from Woodbush indigenous forest in Limpopo Province and Nelshoogte and Knucklod rocks forest in Mpumalanga Province, South Africa.	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFADAF19CD94FD11FBA6FB78.taxon	biology_ecology	Bionomics. All examined specimens were collected in siftings of forest litter.	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFADAF19CD94FA99FB28F89C.taxon	description	Figs. 37 – 41, 91 – 92, 95	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFADAF19CD94FA99FB28F89C.taxon	materials_examined	Type locality. South Africa, Mpumalanga Province, Pilgrimʼs Rest District, Graskop forest. Material examined (42 specimens). SOUTH AFRICA: Mpumalanga: 21 ♂, 21 ♀: Pinnacle Rock, 22. xi. 2023, 24 ° 54.71 ' S, 30 ° 51.24 ' E, tree ferns sifting, ca 1430 m, J. Janák lgt. (JJRC).	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFADAF19CD94FA99FB28F89C.taxon	discussion	Note. A precise picture of the aedeagus of the holotype was published by Puthz (2006: Fig. 32). The paratype from Cape Peninsula was revised by Puthz (1976) and identified as Turellus brincki Puthz, 1976 later transferred to the genus Octavius (Puthz, 1980).	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFADAF19CD94FA99FB28F89C.taxon	distribution	Distribution. The species is currently known from indigenous Graskop forest and from not far situated Pinnacle Rock, Mpumalanga Province, South Africa (Fig. 95).	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFADAF19CD94FA99FB28F89C.taxon	biology_ecology	Bionomics. The examined specimens were collected in siftings of litter under tree ferns at the elevation of about 1430 m a. s. l. and with the abundance 12.0 specimens per kg of sifted material (Figs. 91 – 92).	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFAFAF1BCD94FF09FC49FD69.taxon	description	Figs. 42 – 45, 95	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFAFAF1BCD94FF09FC49FD69.taxon	materials_examined	Type locality. South Africa, Limpopo Province, Soutpansberg. Type material examined. Paratype ♂: “ S. Afr., N Transvaal / Southpansbg Hanglip / 23.02 S – 29.47 E ”, “ 14.3.1973; E-Y: 50 / sifted compost / leg. Endrödy-Younga ”, “ S. Afr. No 50, leg. Endrödy-Younga ”, “ ♂ — Paratypus (top side) Puthz, 2005 (bottom side) ” [yellow], “ Octavius / ocellifer sp. n. / det. Puthz 2005 ” (JJRC). Additional material examined: SOUTH AFRICA: Limpopo: 1 ♀: L. Trichardt, Hanglip, 23.00 S – 29.54 E, 22.4.1976, E-Y: 1142, standing dead tree, leg. Endrödy-Younga (JJRC).	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFAFAF1BCD94FF09FC49FD69.taxon	distribution	Distribution. The species is currently known from a few places in Soutpansberg Mts. in Limpopo Province (Fig. 95), South Africa. A male paratype was recorded also from Western Cape, Outenikwa Pass, which is far away of Soutpansberg Mts. and based on my experience with the distribution of Octavius species in South Africa, I consider this record erroneous, based probably on mislabelled specimen.	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFAFAF1CCD94FD68FB1AF8AB.taxon	description	Figs. 46 – 50, 91 – 92, 95	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFAFAF1CCD94FD68FB1AF8AB.taxon	materials_examined	Type locality. South Africa, Mpumalanga, Pinnacle Rock, 24 ° 54.71 ', S 30 ° 51.24 ' E. Type material (8 specimens). Holotype ♂: “ RSA, Mpumalanga 22. xi. 2023 / 24 ° 54.71 ' S 30 ° 51.24 ' E, Pinnacle / Rock, tree ferns sifting / ca 1430 m, J. Janák lgt. ”, “ Berlese extraction / leaf & log litter / sifting ”, “ HOLOTYPUS Octavius pinnaculus sp. nov. J. Janák det. 2025 ” (TMSA). Paratypes: 4 ♂, 3 ♀: same data as the holotype (JJRC, PPRI). All paratypes with additional labels: “ PARATYPUS Octavius pinnaculus sp. nov. J. Janák det. 2025 ”.	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFAFAF1CCD94FD68FB1AF8AB.taxon	description	Description. Body length 1.9 – 2.2 mm (M 2.2 mm, HT 1.9 mm), forebody length 0.9 – 1.0 mm (M 1 mm, HT 1 mm). Microphthalmous, apterous, dark rusty, head dull, pronotum, elytra and abdomen shiny (Fig. 46). Head (Fig. 46) slightly narrower than pronotum (R 0.91 – 0.94, M 0.92, HT 0.91), eyes relatively large, temples about two times as long as eyes (R 2.08 – 2.38, M 2.22, HT 2.21), sides of head rounded, moderately widened behind eyes to maximal width, then moderately narrowed towards posterior angles, posterior angles moderately rounded, median impression on disc very short, visible only as a shallow elongate impression between eyes, lateral parts of head moderately granulose, median part densely and deeply, but finely reticulate, frons with small shiny fields. Pronotum (Fig. 46) slightly broader than long (R 1.16 – 1.25, M 1,21, HT 1.19), strongly narrowed posteriorly; anterior angles angular, dorsal impressions moderately deep, transverse impression very deep, lateral impressions deep, delimited by sharp longitudinal ridge laterally; lateral parts beside lateral impressions moderately densely granulose, surface between dorsal impressions sparsely but coarsely granulate and reticulate, thus more shiny than remaining surface, anterior part before transverse impression finely and densely reticulate. Elytra (Fig. 46) subquadrate, much broader than long (R 1.59 – 1.71, M 1.66, HT 1.71), with two sharp longitudinal ridges laterally; between latter and suture sparsely and coarsely granulate, thus shiny. Abdomen subparallel, slightly widened to segment V, with one paratergite and very fine microsculpture consisting of triangular or rhomboid field, finely setose. Male. Sternite VIII deeply triangularly emarginated in posterior quarter (Fig. 49), sternite IX as in Fig. 50. Aedeagus asymmetrical, moderately long (0.57 – 0.60 mm, M 0.58 mm, HT 0.57 mm) and wide, with narrow hook-shaped projection, with two long and narrow strongly sclerotised internal structures; parameres shorter than median lobe, with 10 – 15 setae in widened apical fifth (Figs. 47 – 48).	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFAFAF1CCD94FD68FB1AF8AB.taxon	diagnosis	Differential diagnosis. Octavius pinnaculus Janák, sp. nov. belongs among species with moderately large eyes, with temples at about two times as long as eyes, with the head moderately dilated posteriorly, with moderate body and the disc of the head with very short shallow median impression limited only between eyes. In the most recent key of South African Octavius (Janák 2014) is to be arranged at the couplet 125 (126) near O. spiralifer Puthz, 2006, but it differs from this species by being shinier, more coarsely and sparsely granulate pronotum and by different shape of the aedeagus.	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFAFAF1CCD94FD68FB1AF8AB.taxon	etymology	Derivatio nominis. This name of the species refers to the type locality.	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFAFAF1CCD94FD68FB1AF8AB.taxon	distribution	Distribution. Octavius pinnaculus Janák, sp. nov. is currently recorded only from the Pinnacle Rock, Mpumalanga Province, South Africa (Fig. 95).	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFAFAF1CCD94FD68FB1AF8AB.taxon	biology_ecology	Bionomics. All examined specimens were collected in siftings of litter under tree ferns at the elevation of about 1400 m a. s. l. and with the abundance 2.3 specimens per kg of sifted material (Figs. 91 – 92).	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFA9AF1ECD94FF09FE8CFF18.taxon	description	Figs. 51 – 55, 95	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFA9AF1ECD94FF09FE8CFF18.taxon	materials_examined	Type locality. South Africa, Mpumalanga Province, Berlin forest. Type material examined. Paratype ♂: “ S. Afr., Transvaal / Berlin forest / 25.32 S – 30.44 E ”, “ 20.9.1986; E-Y: 2278 / sifting / leg. Endrödy-Younga ”, “ ♂ — Paratypus (top side) Puthz, 2005 (bottom side) ” [yellow], “ Octavius / pugionifer sp. n. / det. Puthz 2005 ” (JJRC). Additional material examined: SOUTH AFRICA: Mpumalanga: 1 ♂: Berlin forest, 25.32 S – 30.44 E, 22.9.1986, E-Y: 2284, sifting, leg. Endrödy-Younga (JJRC).	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFA9AF1ECD94FF09FE8CFF18.taxon	distribution	Distribution. The species is currently known only from Berlin forest in Mpumalanga Province, South Africa (Fig. 95).	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFAAAF1ECD94FEB9FD8BFD4D.taxon	description	Figs. 56 – 59, 95	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFAAAF1ECD94FEB9FD8BFD4D.taxon	materials_examined	Type locality. South Africa, Mpumalanga Province, Mariepskop. Type material examined. Paratype ♂: “ S. Afr., E Transvaal / Mariepskop / 24.35 S – 30.50 E ”, “ ♂ — Paratypus (top side) Puthz, 2005 (bottom side) ” [yellow], “ Octavius / securifer sp. n. / det. Puthz 2005 ” (JJRC).	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFAAAF1ECD94FEB9FD8BFD4D.taxon	distribution	Distribution. The species is currently known from indigenous forest in Mt. Mariepskop in Mpumalanga Province, South Africa (Fig. 95).	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFAAAF1ECD94FD4FFECCFAEB.taxon	description	Figs. 60 – 64, 85 – 88, 95	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFAAAF1ECD94FD4FFECCFAEB.taxon	materials_examined	Type locality. South Africa, Mpumalanga Province, Mariepskop. Type material examined. Paratype ♂: “ S. Afr., E. Transvaal / Mariepskop / 24.35 S – 30.50 E ”, “ 6.5.1981; E-Y: 1785 / sifting / leg. Endrödy-Younga ”, “ ♂ — Paratypus (top side) Puthz, 2005 (bottom side) ” [yellow], “ Octavius / transvaalensis sp. n. / det. Puthz 2005 ” (JJRC). Additional material examined (86 specimens): SOUTH AFRICA: Mpumalanga: 3 ♂, 5 ♀: Mariepskop forest reserve, fynbos 1, ca. 1900 m, 25. xi. 2023, 24 ° 33.10 ' S, 30 ° 52.33 ' E, J. Janák lgt. (JJRC); 27 ♂, 20 ♀, 31 ♂ or ♀: Mariepskop forest reserve, ind. forest, 1645 m, 25. xi. 2023, 24 ° 33.9 ' S, 30 ° 51.7 ' E, J. Janák lgt. (JJRC).	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFAAAF1ECD94FD4FFECCFAEB.taxon	distribution	Distribution. The species is currently known only from Mt. Mariepskop in Mpumalanga Province, South Africa (Fig. 95).	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFAAAF1ECD94FD4FFECCFAEB.taxon	biology_ecology	Bionomics. All new specimens were collected in siftings of forest litter or in fynbos at the elevation of about 1600 – 1900 m a. s. l. (Figs. 85 – 88, the abundance of specimens per kg of sifted material: fynbos 1: 1.1 / kg, 1645 m a. s. l.: 12.2 / kg).	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFAAAF1FCD94FAE6FD65F8DC.taxon	description	Figs. 65 – 71, 85 – 88, 95	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFAAAF1FCD94FAE6FD65F8DC.taxon	materials_examined	Type locality. South Africa, Mpumalanga Province, Mariepskop. Type material examined. Paratype ♂: “ S. Afr., E. Transvaal / Mariepskop / 24.35 S – 30.50 E ”, “ 6.5.1981; E-Y: 1785 / sifting / leg. Endrödy-Younga ”, “ ♂ — Paratypus (top side) Puthz, 2005 (bottom side) ” [yellow], “ Octavius / trihastatus sp. n. / det. Puthz 2005 ” (JJRC). Additional material examined (270 specimens): SOUTH AFRICA: Mpumalanga: 1 ♂: Mariepskop, Bush Pic Trail, km 1, 1550 m, - 24.56651 S, 30.876382 E 17. xi. 2012, sifted at stream, P. Jałoszyński lgt. (MNHW); 3 ♂, 3 ♀, 101 ♂ or ♀: Mariepskop forest reserve, fynbos 1, ca. 1900 m, 25. xi. 2023, 24 ° 33.10 ' S 30 ° 52.33 ' E, J. Janák lgt. (JJRC); 2 ♂, 4 ♀, 72 ♂ or ♀: Mariepskop forest reserve, fynbos 2, ca. 1900 m, 25. xi. 2023, 24 ° 33.17 ' S 30 ° 52.20 ' E, J. Janák lgt. (JJRC); 10 ♂, 32 ♀, 42 ♂ or ♀: Mariepskop forest reserve, ind. forest, 1645 m, 25. xi. 2023, 24 ° 33.9 ' S 30 ° 51.7 ' E, J. Janák lgt. (JJRC). Note. Significant variability in the shape of apical part of aedeagus was observed among examined specimens (Figs. 66 – 69).	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFAAAF1FCD94FAE6FD65F8DC.taxon	distribution	Distribution. The species is currently known only from Mt. Mariepskop in Mpumalanga Province, South Africa (Fig. 95). Bionomics. All new specimens were collected in siftings of forest litter in indigenous forest and in fynbos at the elevation of about 1600 – 1900 m a. s. l. (Figs. 85 – 88, with the abundance of specimens per kg of sifted material: fynbos 1: 14.9 / kg, fynbos 2: 15.3 / kg, forest 13.1 / kg).	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFABAF01CD94F8FDFB46FBDC.taxon	description	Figs. 72 – 76, 93 – 95	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFABAF01CD94F8FDFB46FBDC.taxon	materials_examined	Type locality. South Africa, Limpopo, Woodbush Forest Reserve, 23 ° 50.1 ' S 29 ° 59.25 ' E. Type material (5 specimens). Holotype ♂: “ RSA, Limpopo 29. xi. 2023 / 23 ° 50.25 ' S 29 ° 59.6 ' E / Woodbush Forest Reserve / 1560 m, J. Janák lgt. ”, “ Berlese extraction / leaf & log litter / sifting ”, “ HOLOTYPUS Octavius woodbushensis sp. nov. J. Janák det. 2025 ” (TMSA). Paratypes: 4 ♀: same data as the holotype (JJRC). All paratypes with additional labels: “ PARATYPUS Octavius woodbushensis sp. nov. J. Janák det. 2025 ”.	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFABAF01CD94F8FDFB46FBDC.taxon	description	Description. Body length 1.2 – 1.3 mm (M 1.3 mm, HT 1.3 mm), forebody length 0.5 mm (M 0.5 mm, HT 0.5 mm). Microphthalmous, apterous, rusty, head, pronotum and elytra dull, abdomen moderately shiny (Fig. 72). Head (Fig. 72) almost as broad as pronotum (R 0.98), eyes extremely small, temples about 7 – 10 times as long as eyes (R 7.50 – 10.43, M 9.34, HT 10.00), sides of head slightly rounded, slightly widened behind eyes to maximal width, then moderately narrowed towards posterior angles, posterior angles angular, median impression on disc deep and long, lateral parts of head finely granulose, median part densely, deeply, finely reticulate. Pronotum (Fig. 72) very slightly broader than long (R 1.02 – 1.08, M 1.06, HT 1.02), strongly narrowed posteriorly; anterior angles rounded, dorsal impressions deep, transverse impression deep, lateral impressions deep, not delimited by sharp longitudinal ridge laterally; lateral parts beside lateral impressions moderately densely granulose, remainder of surface very densely, deeply, finely reticulate. Elytra (Fig. 72) subquadrate, much broader than long (R 1.27 – 1.40, M 1.32, HT 1.31), with two sharp longitudinal ridges laterally; between latter and suture with two longitudinal impressions, densely and moderately finely reticulate and sparsely shortly setose. Abdomen subparallel, slightly widened to segment VI, with one paratergite and microsculpture consisting of triangular or rhomboid field, finely setose. Male. Sternite VIII shallowly emarginate in posterior tenth (Fig. 75), sternite IX as in Fig. 76. Aedeagus asymmetrical, small (0.22 mm) and narrow, with apically hook-shaped narrow projection; parameres almost reaching median lobe, with two long setae in middle part, 3 – 4 setae in apical part and 2 setae before middle (Fig. 74).	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFABAF01CD94F8FDFB46FBDC.taxon	diagnosis	Differential diagnosis. Octavius woodbushensis Janák, sp. nov. belongs among species with very small eyes, with temples at about 7 – 10 times as long as eyes, with the head not or at most slightly widened posteriorly, with very small body and the disc of the head with deep and long median impression. In the most recent key of South African Octavius (Janák 2014) is to be arranged at the couplet 100 (99) near O. ocellifer Puthz, 2006, but it differs from this species by much smaller body, still smaller eyes, shallower dorsal impression on head and by different shape of aedeagus.	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFABAF01CD94F8FDFB46FBDC.taxon	etymology	Derivatio nominis. The name of the species refers to the type locality.	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFABAF01CD94F8FDFB46FBDC.taxon	distribution	Distribution. Octavius woodbushensis Janák, sp. nov. is currently recorded only from the Woodbush Forest Reserve, Limpopo Province, South Africa (Fig. 95). Bionomics. All specimens were collected in siftings of forest litter in an indigenous forest at the elevation of about 1560 m a. s. l. with the abundance of 0.6 specimens per kg of sifted material (Figs. 93 – 94).	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFB5AF04CD94F9C5FAF9FD64.taxon	description	Figs. 77 – 82, 85 – 87, 95	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFB5AF04CD94F9C5FAF9FD64.taxon	materials_examined	Type locality. South Africa, Mpumalanga, Mariepskop Forest Reserve. Type material (8 specimens). Holotype ♂: “ RSA, Mpumalanga 25. xi. 2023 / 24 ° 33.10 ' S 30 ° 52.33 ' E, / Mariepskop Forest res, fynbos 1 / ca. 1900 m, J. Janák lgt. ”, “ Berlese extraction / leaf & log litter / sifting ”, “ HOLOTYPUS Octavius mariepskopensis sp. nov. J. Janák det. 2025 ” (TMSA). Paratypes: 5 ♀: same data as holotype (JJRC); 1 ♂: “ RSA, Mpumalanga 25. xi. 2023 / 24 ° 33.17 ' S 30 ° 52.20 ' E, / Mariepskop Forest res, fynbos 2 / ca. 1900 m, J. Janák lgt. ”, “ Berlese extraction / leaf & log litter / sifting ” (JJRC, PPRI). All paratypes with additional labels: “ PARATYPUS Octavius mariepskopensis sp. nov. J. Janák det. 2025 ”.	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFB5AF04CD94F9C5FAF9FD64.taxon	description	Description. Body length 0.9 – 1.4 mm (M 1.02 mm, HT 1.0 mm), forebody length 0.4 – 0.5 mm (M 0.5 mm, HT 0.5 mm). Anophthalmous, apterous, light rusty, shiny (Fig. 77). Head (Figs. 78 – 79) slightly broader than pronotum (R 1.04 – 1.11, M 1.06, HT 1.07), eyes completely absent (Figs. 79), sides of head widened moderately towards posterior angles, posterior angles moderately angular, median impression on disc absent, surface with very fine reticulation consisting of polygonal fields and very fine punctures raising from center of each field. Pronotum (Fig. 78) markedly longer than broad (R 1.12 – 1.24, M 1.20, HT 1.24), strongly narrowed posteriorly; anterior angles rounded, disc regularly convex, disc and base without impressions, posterior angles shortly rounded; surface finely reticulate and very finely punctate, similarly as on head. Elytra (Fig. 78) roundly trapezoid, slightly to markedly broader than long (R 1.05 – 1.27, M 1.15, HT 1.11), about as broad as head (R 0.93 – 1.01, M 0.98, HT 0.98), without sharp outer longitudinal ridge laterally; surface with very fine reticulation consisting of irregular polygonal fields and then and there with very fine punctures. Abdomen with two paratergites, with reticulation consisting of polygonal, slightly transverse fields, very finely and sparsely punctate. Male. Posterior margin of sternite VIII very slightly emarginate (Fig. 81), sternite IX as in Fig. 82. Aedeagus symmetrical, long and narrow (length 0.19 mm), apical part sharply pointed, internal sac with horseshoe-shaped structure in apical part; parameres shorter than median lobe, each with very short and moderately robust seta directly at apical point and oriented proximally and two finer, longer and narrower setae situated nearby at lateral sides and oriented laterally (Fig. 80).	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFB5AF04CD94F9C5FAF9FD64.taxon	diagnosis	Differential diagnosis. Octavius mariepskopensis Janák, sp. nov. belongs among anophthalmous species together with Octavius caecigenus Puthz, 2006, but differs by the different shape of the aedeagus sharply pointed apically and having different internal structure.	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFB5AF04CD94F9C5FAF9FD64.taxon	etymology	Derivatio nominis. The name of this species refers to the type locality.	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
8D1B879FFFB5AF04CD94F9C5FAF9FD64.taxon	distribution	Distribution. Octavius mariepskopensis Janák, sp. nov. is currently recorded only from the Mariepskop Forest Reserve, Mpumalanga Province, South Africa (Fig. 95). Bionomics. All specimens were collected in siftings of litter in a mountain fynbos at the elevation of about 1900 m a. s. l. (Figs. 85 – 88, the abundance of specimens per kg of sifted material: fynbos 1: 0.8 / kg, fynbos 2: 0.2 / kg).	en	Janák, Jiří (2025): Overview of Octavius of Mpumalanga and Limpopo Provinces, South Africa (Coleoptera: Staphylinidae: Euaesthetinae) with descriptions of eight new species. Zootaxa 5737 (1): 105-126, DOI: 10.11646/zootaxa.5737.1.5, URL: https://doi.org/10.11646/zootaxa.5737.1.5
