taxonID	type	description	language	source
03A787FE7B35FFF7FF7BACABFA5E570C.taxon	diagnosis	With character states of Oppiidae (Norton and Behan-Pelletier 2009). Measurements: Length about 200 – 380. Integument. Body nearly smooth or tuberculate / granulate (partially or entirely); sometimes covered by specific tuberculate, ridge- or band-like cerotegument; lateral side of body between bothridium and acetabula densely tuberculate. Prodorsum. Rostrum rounded. Costular-transcostular complex reduced or slightly visible, nearly trapezoid. Lateral arch-like prodorsal ridge usually present. Interbothridial region with two longitudinal ridges and two or three pairs of muscle sigillae between them; interbothridial tubercle absent; postbothridial tubercle usually present. Rostral seta medium-sized, setiform or phylliform; lamellar seta medium-sized, phylliform, located closer to in than to ro; interlamellar seta short, setiform or medium-sized, phylliform; bothridial seta long, clavate / unilaterally fusiform / nearly setiform, barbed or with shortly ciliated; exobothridial seta short, setiform. Notogaster. Anterior margin narrowed medially. Humeral region usually with humeral tubercle and crista. Ten pairs of setae: c short, setiform or phylliform; other setae medium-sized, phylliform. Gnathosoma. Subcapitulum diarthric. Palp setation: 0 - 2 - 1 - 3 - 9 (+ ω); solenidion long, bacilliform, pressed to surface, located in middle of dorsal part of tarsus. Chelicera chelate-dentate. Epimeral and lateral podosomal regions. Epimere IV of normal length; border IV present. Epimeral setal formula: 3 - 1 - 3 - 3; all setae setiform. Ventrosejugal tubercle absent. Pedotectum I represented by small lamina. Discidium present. Anogenital region. Anogenital setal formula: 5 - 1 - 2 - 3; adanal setae setiform or phylliform; other anogenital setae setiform. Adanal seta ad 1 posterior, ad 2 posterior or posterolateral, ad 3 anterolateral to anal plate; distance ad 3 – ad 3 longer than ag – ag and ad 2 – ad 2. Adanal lyrifissure located close and parallel to anal aperture. Legs. Tibia I with anterodorsal projection. Tarsus II with two solenidia. Sexual dimorphism: sometimes present in morphology of adanal setae and leg segments.	en	Ermilov, Sergey G. (2025): Taxonomic contribution to knowledge of the oribatid mite genera Corynoppia, Ramusella and Wallworkella (Acari, Oribatida, Oppiidae). Zootaxa 5621 (3): 353-370, DOI: 10.11646/zootaxa.5621.3.4, URL: https://doi.org/10.11646/zootaxa.5621.3.4
03A787FE7B35FFF7FF7BACABFA5E570C.taxon	discussion	General remarks on Corynoppia species Subías (2004, online version 2011) included Striatoppia weigmanni Murvanidze & Behan-Pelletier, 2011 in Corynoppia. The genera Striatoppia Balogh 1958 and Corynoppia are morphologically similar to each other, but the former differs from the latter in having two strong longitudinal prodorsal ridges between rostral and lamellar setae (versus ridges completely absent) and the presence (versus absence) of striae on the notogaster (usually also in anogenital region). Striatoppia weigmanni has no ridges between rostral and lamellar setae as well as true striae on the body (only cerotegumental bands visible), therefore, the placement of this species in Corynoppia seems correct. Subías (2022, online version 2024) supported the initial generic placement of Striatoppia margaritata Mahunka, 1969, but Ermilov and Rybalov (2025) transferred it in Corynoppia due absence of the longitudinal prodorsal ridges between rostral and lamellar setae as well as striae on the body.	en	Ermilov, Sergey G. (2025): Taxonomic contribution to knowledge of the oribatid mite genera Corynoppia, Ramusella and Wallworkella (Acari, Oribatida, Oppiidae). Zootaxa 5621 (3): 353-370, DOI: 10.11646/zootaxa.5621.3.4, URL: https://doi.org/10.11646/zootaxa.5621.3.4
03A787FE7B36FFF4FF7BA847FBA8563D.taxon	description	(Figures 1, 2)	en	Ermilov, Sergey G. (2025): Taxonomic contribution to knowledge of the oribatid mite genera Corynoppia, Ramusella and Wallworkella (Acari, Oribatida, Oppiidae). Zootaxa 5621 (3): 353-370, DOI: 10.11646/zootaxa.5621.3.4, URL: https://doi.org/10.11646/zootaxa.5621.3.4
03A787FE7B36FFF4FF7BA847FBA8563D.taxon	materials_examined	Type material. Holotype (female) and three paratypes (one male and two females): southern Ethiopia, South Ethiopia Regional State, Gamo Zone, 6 ° 01 ’ 36.7 ’’ N, 37 ° 35 ’ 42.7 ’’ E, 1170 m a. s. l., 5 km East from the town Arba Minch, 1 km from the lake Abai, mineral soil (0 – 5 cm) in a mixed forest on the terrace (first layer of forest: Celtis sp., Ficus sycomorus, Schefflera sp., Acacia sp.; second layer of forest: Lemon sp., Coffee arabica) on the brown (black-brown) soil with light-medium loam soil texture, 7. XII. 2018, dry season (L. B. Rybalov). Five paratypes (three males and two females): southern Ethiopia, South Ethiopia Regional State, Gamo Zone, 6 ° 01 ’ 28.7 ’’ N, 37 ° 35 ’ 49.7 ’’ E, 1179 m a. s. l., 5 km East from the town Arba Minch, 20 – 40 m from the lake Abai, mineral soil (0 – 5 cm) in a mixed deciduous forest on the alluvial organic soil, wet place, around water spots, 8. XII. 2018, dry season (L. B. Rybalov). The holotype is deposited in the collection of the Senckenberg Museum of Natural History, Görlitz, Germany; eight paratypes are deposited in the collection of the University of Tyumen, Museum Zoology, Tyumen, Russia. All specimens are preserved in 70 % solution of ethanol with a drop of glycerol.	en	Ermilov, Sergey G. (2025): Taxonomic contribution to knowledge of the oribatid mite genera Corynoppia, Ramusella and Wallworkella (Acari, Oribatida, Oppiidae). Zootaxa 5621 (3): 353-370, DOI: 10.11646/zootaxa.5621.3.4, URL: https://doi.org/10.11646/zootaxa.5621.3.4
03A787FE7B36FFF4FF7BA847FBA8563D.taxon	diagnosis	Diagnosis. Body length: 270 – 300. Prodorsum with sparse tubercles; notogaster and anogenital region not tuberculate. Interbothridial region with three pairs of muscle sigillae. Rostral seta medium-sized, nearly setiform, barbed; lamellar and interlamellar setae medium-sized, broadly phylliform, barbed; bothridial seta long, with unilaterally fusiform and shortly ciliate head. Humeral tubercle developed. Notogastral seta c short, setiform, roughened, inserted on humeral tubercle; other notogastral setae medium-sized, broadly phylliform (sometimes some setae slightly bifid), barbed. Epimeral, genital and aggenital setae setiform, nearly smooth; both anal setae and adanal seta ad 3 setiform, slightly barbed; adanal setae ad 1 and ad 2 broadly phylliform (sometimes slightly bifid), barbed. Anterodorsal part of leg tibia IV with broad dilatation in males.	en	Ermilov, Sergey G. (2025): Taxonomic contribution to knowledge of the oribatid mite genera Corynoppia, Ramusella and Wallworkella (Acari, Oribatida, Oppiidae). Zootaxa 5621 (3): 353-370, DOI: 10.11646/zootaxa.5621.3.4, URL: https://doi.org/10.11646/zootaxa.5621.3.4
03A787FE7B36FFF4FF7BA847FBA8563D.taxon	description	Description of adult. Measurements. Body length: 300 (holotype), 270 – 300 (male paratypes), 285 – 300 (female paratypes); notogastral width: 157 (holotype), 135 – 150 (male paratypes), 143 – 157 (female paratypes). Integument (Figs 1 A, C; 2 B). Body color light brown to grayish. Body nearly smooth, but prodorsum and subcapitular mentum sparsely tuberculate; region between bothridium and acetabula I – III with typical dense tubercles; leg femora I – IV and trochanter III, IV partially densely tuberculate; all tubercles small (their diameter up to 2). Prodorsum (Figs 1 A, C). Rostrum broadly rounded. Costular-transcostular complex elongate trapezoid, poorly developed. Interbothridial longitudinal ridges and three pairs of muscle sigillae between them well visible. Lateral ridge medium-sized, slightly arch-like. Rostral seta (26 – 28) nearly setiform, barbed; lamellar and interlamellar setae (17 – 19) broadly phylliform, narrowed distally, barbed; exobothridial seta (5) setiform, roughened; bothridial seta (52 – 56) with long, smooth stalk and shorter, unilaterally fusiform and shortly ciliate head. Postbothridial tubercle present; slight tubercle-like thickening located opposite to postbothridial tubercle. Notogaster (Figs 1 A, C; 2 A). Anterior margin of notogaster slightly convex and shortly interrupted medially. Humeral region with tubercle and crista. Notogastral seta c (5) setiform, roughened, inserted in medial part of humeral tubercle; other setae (22 – 26) broadly phylliform, narrowed distally, barbed; sometimes some setae slightly bifid. Opisthonotal gland opening and all lyrifissures well visible. Gnathosoma (Figs 2 B – D). Subcapitulum size: 60 – 64 × 45 – 49; subcapitular setae a (13 – 15) and h (13 – 15) setiform, roughened; m (15) setiform, barbed; all adoral setae (6) setiform, smooth. Palp length: 45 – 49; with typical setation: 0 - 2 - 1 - 3 - 9 (+ ω); postpalpal seta (4) spiniform, smooth. Chelicera length: 60 – 64; setae (cha: 19; chb: 13 – 15) setiform, barbed. Epimeral and lateral podosomal regions (Figs 1 B, C). Epimeres with typical epimeral setal formula (3 - 1 - 3 - 3); setae (11 – 15) setiform, nearly smooth. Discidium triangular, with rounded top. Anogenital region (Figs 1 B, C; 2 A). With typical anogenital setal formula (5 - 1 - 2 - 3); genital (7 – 9) and aggenital (11 – 15) setae setiform, nearly smooth; both anal setae (19 – 22) and adanal seta ad 3 (22) setiform, slightly barbed; adanal setae ad 1 (22) and ad 2 (22) broadly phylliform, narrowed distally (sometimes slightly bifid), barbed. Adanal lyrifissure distinct, in typical position for genus (close and parallel to lateral side of anal plate). Legs (Figs 2 E – H). Claw of each leg smooth. Porose area on all leg segments not visible. Anterodorsal projection well developed on tibia I. Trochanter III with posterior tooth. Sexual dimorphism in morphology of tibia IV present: in males, anterodorsal part of segment with broad dilatation (Fig. 2 H) versus in females, segment without dilatation. Formulas of leg setation and solenidia: I (1 - 5 - 2 - 4 - 20) [1 - 2 - 2], II (1 - 5 - 2 - 4 - 16) [1 - 1 - 2], III (2 - 3 - 1 - 3 - 15) [1 - 1 - 0], IV (1 - 2 - 2 - 3 - 12) [0 - 1 - 0]; homology of setae and solenidia indicated in Table 1; seta s on tarsus I eupathidial; some setae narrowly or broadly phylliform; solenidion ω 2 on tarsus I rod-like; φ 1 on tibia I subflagellate; other solenidia nearly thickened, rounded distally.	en	Ermilov, Sergey G. (2025): Taxonomic contribution to knowledge of the oribatid mite genera Corynoppia, Ramusella and Wallworkella (Acari, Oribatida, Oppiidae). Zootaxa 5621 (3): 353-370, DOI: 10.11646/zootaxa.5621.3.4, URL: https://doi.org/10.11646/zootaxa.5621.3.4
03A787FE7B36FFF4FF7BA847FBA8563D.taxon	discussion	Remarks. Corynoppia gamoensis sp. nov. is similar is similar to C. weigmanni (Murvanidze & Behan-Pelletier, 2011) from Caucasus in the presence of the unilaterally fusiform bothridial seta and medium-sized, broadly phylliform interlamellar seta. However, the new species differs from the latter by the morphology of the adanal seta ad 2 (phylliform versus setiform), the morphology and location of the notogastral seta c (setiform, inserted on humeral tubercle versus phylliform, inserted medial to humeral tubercle), the number of the interbothridial muscle sigillae (three pairs versus two pairs), and the absence (versus presence) of the cerotegumental bands on the notogaster and in the anogenital region.	en	Ermilov, Sergey G. (2025): Taxonomic contribution to knowledge of the oribatid mite genera Corynoppia, Ramusella and Wallworkella (Acari, Oribatida, Oppiidae). Zootaxa 5621 (3): 353-370, DOI: 10.11646/zootaxa.5621.3.4, URL: https://doi.org/10.11646/zootaxa.5621.3.4
03A787FE7B36FFF4FF7BA847FBA8563D.taxon	etymology	Etymology. The species name gamoensis refers to the place of origin, Gamo Zone.	en	Ermilov, Sergey G. (2025): Taxonomic contribution to knowledge of the oribatid mite genera Corynoppia, Ramusella and Wallworkella (Acari, Oribatida, Oppiidae). Zootaxa 5621 (3): 353-370, DOI: 10.11646/zootaxa.5621.3.4, URL: https://doi.org/10.11646/zootaxa.5621.3.4
03A787FE7B32FFF8FF7BACF9FE075490.taxon	description	(Figures 3, 4)	en	Ermilov, Sergey G. (2025): Taxonomic contribution to knowledge of the oribatid mite genera Corynoppia, Ramusella and Wallworkella (Acari, Oribatida, Oppiidae). Zootaxa 5621 (3): 353-370, DOI: 10.11646/zootaxa.5621.3.4, URL: https://doi.org/10.11646/zootaxa.5621.3.4
03A787FE7B32FFF8FF7BACF9FE075490.taxon	materials_examined	Type material. Holotype (male) and six paratypes (two males and four females): southern Ethiopia, South Ethiopia Regional State, Gamo Zone, 6 ° 01 ’ 36.7 ’’ N, 37 ° 35 ’ 42.7 ’’ E, 1170 m a. s. l., 5 km East from the town Arba Minch, 1 km from the lake Abai, mineral soil (0 – 5 cm) in a mixed forest on the terrace (first layer of forest: Celtis sp., Ficus sycomorus, Schefflera sp., Acacia sp.; second layer of forest: Lemon sp., Coffee arabica) on the brown (black-brown) soil with light-medium loam soil texture, 7. XII. 2018, dry season (L. B. Rybalov). One paratype (one male): southern Ethiopia, South Ethiopia Regional State, Gamo Zone, 6 ° 01 ’ 28.7 ’’ N, 37 ° 35 ’ 49.7 ’’ E, 1179 m a. s. l., 5 km East from the town Arba Minch, 20 – 40 m from the lake Abai, mineral soil (0 – 5 cm) in a mixed deciduous forest on the alluvial organic soil, wet place, around water spots, 8. XII. 2018, dry season (L. B. Rybalov). The holotype is deposited in the collection of the Senckenberg Museum of Natural History, Görlitz, Germany; seven paratypes are deposited in the collection of the University of Tyumen, Museum Zoology, Tyumen, Russia. All specimens are preserved in 70 % solution of ethanol with a drop of glycerol.	en	Ermilov, Sergey G. (2025): Taxonomic contribution to knowledge of the oribatid mite genera Corynoppia, Ramusella and Wallworkella (Acari, Oribatida, Oppiidae). Zootaxa 5621 (3): 353-370, DOI: 10.11646/zootaxa.5621.3.4, URL: https://doi.org/10.11646/zootaxa.5621.3.4
03A787FE7B32FFF8FF7BACF9FE075490.taxon	diagnosis	Diagnosis. Body length: 255 – 300. Costular line short, thin; transcostular line absent. Interbothridial region with three pairs of muscle sigillae. Rostral and interlamellar setae medium-sized, setiform, slightly barbed; lamellar and exobothridial setae short, setiform, roughened; bothridial seta long, with clavate head bearing four (sometimes three) long, setiform, barbed branches and three to five short ciliae. Notogastral seta c represented by alveolus; la, lm, lp, h 1 – h 3 long, p 1 – p 3 short, all setiform, sparsely barbed or nearly smooth. Surface of chelicera with ridges. Epimeral and anogenital setae setiform, nearly smooth or roughened. Ventrosejugal region with one pair of tubercles. Lateral longitudinal carina in podosomal region with tooth.	en	Ermilov, Sergey G. (2025): Taxonomic contribution to knowledge of the oribatid mite genera Corynoppia, Ramusella and Wallworkella (Acari, Oribatida, Oppiidae). Zootaxa 5621 (3): 353-370, DOI: 10.11646/zootaxa.5621.3.4, URL: https://doi.org/10.11646/zootaxa.5621.3.4
03A787FE7B32FFF8FF7BACF9FE075490.taxon	description	Description of adult. Measurements. Body length: 255 (holotype), 255 – 285 (male paratypes), 270 – 300 (female paratypes); notogastral width: 135 (holotype), 135 – 150 (male paratypes), 150 – 157 (female paratypes). Integument (Fig. 3 C). Body color light brown. Body nearly smooth; region between bothridium and acetabula I – III with typical dense tubercles (their diameter up to 2). Prodorsum (Figs 3 A, C). Rostrum rounded. Costular line short, thin; transcostular line absent. Interbothridial region with three pairs of muscle sigillae. Lateral ridge absent. Rostral (30 – 34) and interlamellar (30 – 37) setae setiform, slightly barbed; lamellar (15 – 19) and exobothridial (11) setae setiform, roughened; bothridial seta (49 – 52) with long, smooth stalk and shorter, clavate head bearing four (sometimes three) long, setiform, barbed branches and three to five short cilia. Postbothridial and sejugal tubercles not visible. Sejugal porose area (5 – 7) present, circular. Notogaster (Figs 3 A, C; 4 A). Anterior margin of notogaster convex medially. Notogastral seta c represented by alveolus; other setae (la, lm, lp, h 1 – h 3: 34 – 45; p 1 – p 3: 17 – 22) setiform, sparsely barbed or nearly smooth. Opisthonotal gland opening and all lyrifissures well visible. Gnathosoma (Figs 4 B – D). Subcapitulum size: 60 – 64 × 45 – 49; subcapitular setae a (9 – 11) and h (13 – 15) setiform, roughened; m (13 – 15) setiform, barbed; all adoral setae (6) setiform, smooth. Palp length: 41 – 49; with typical setation: 0 - 2 - 1 - 3 - 9 (+ ω); postpalpal seta (4) spiniform, smooth. Chelicera length: 60 – 64; seta cha (17 – 19) setiform, dorsally ciliate; chb (11 – 13) setiform, barbed; surface of chelicera with four ridges (Fig. 4 D). Epimeral and lateral podosomal regions (Figs 3 B, C). Epimeres with typical epimeral setal formula (3 - 1 - 3 - 3); setae (1 a, 2 a, 3 a: 7; 1 c, 3 b, 4 a, 4 b: 11) setiform, nearly smooth; others (1 b, 4 c: 17 – 19; 3 c: 22 – 26) setiform, roughened. Ventrosejugal region with one pair of strong tubercles (each tubercle located posterior to insertion of 2 a). Lateral longitudinal carina with tooth (well visible in ventral aspect; Fig. 3 B). Discidium triangular, with pointed top. Anogenital region (Figs 3 B, C; 4 A). With typical anogenital setal formula (5 - 1 - 2 - 3); genital (5) and anal (11 – 13) setae setiform, nearly smooth; aggenital and adanal setae (17 – 22) setiform, roughened. Adanal lyrifissure distinct, in typical position for genus (close and parallel to lateral side of anal plate). Legs (Figs 4 E – H). Claw of each leg smooth. Porose area on all leg segments not visible. Trochanter III with two or three posterior teeth. Formulas of leg setation and solenidia: I (1 - 5 - 2 - 4 - 20) [1 - 2 - 2], II (1 - 5 - 2 - 4 - 16) [1 - 1 - 2], III (2 - 3 - 1 - 3 - 15) [1 - 1 - 0], IV (1 - 2 - 2 - 3 - 12) [0 - 1 - 0]; homology of setae and solenidia indicated in Table 1; seta s on tarsus I eupathidial; setae a ′′ and pv ′′ on tarsus IV modified (brush-like); solenidia ω 1 on tarsi I, ω 1 and ω 2 on tarsus II and σ on genu III nearly bacilliform, φ 1 on tibia I and φ on tibia IV subflagellate; other solenidia setiform or rod-like.	en	Ermilov, Sergey G. (2025): Taxonomic contribution to knowledge of the oribatid mite genera Corynoppia, Ramusella and Wallworkella (Acari, Oribatida, Oppiidae). Zootaxa 5621 (3): 353-370, DOI: 10.11646/zootaxa.5621.3.4, URL: https://doi.org/10.11646/zootaxa.5621.3.4
03A787FE7B32FFF8FF7BACF9FE075490.taxon	discussion	Remarks. Ramusella (Insculptoppia) arbaminchensis sp. nov. is similar to R. (I.) rybalovi Ermilov, Shtanchaeva & Subias, 2022 from Ethiopia in the presence of the barbed branches on the bothridial seta as well as long dorsal notogastral setae and strong tubercles in ventrosejugal region. However, the new species differs from the latter by the morphology of the bothridial seta (with well developed head versus without head), the absence (versus presence) of the transcostula, postbothridial tubercle and prodorsal lateral ridge, and in the presence (versus absence) of the tooth on lateral carina in the podosomal region.	en	Ermilov, Sergey G. (2025): Taxonomic contribution to knowledge of the oribatid mite genera Corynoppia, Ramusella and Wallworkella (Acari, Oribatida, Oppiidae). Zootaxa 5621 (3): 353-370, DOI: 10.11646/zootaxa.5621.3.4, URL: https://doi.org/10.11646/zootaxa.5621.3.4
03A787FE7B32FFF8FF7BACF9FE075490.taxon	etymology	Etymology. The species name arbaminchensis refers to the town Arba Minch, five kilometers from which the new species was collected.	en	Ermilov, Sergey G. (2025): Taxonomic contribution to knowledge of the oribatid mite genera Corynoppia, Ramusella and Wallworkella (Acari, Oribatida, Oppiidae). Zootaxa 5621 (3): 353-370, DOI: 10.11646/zootaxa.5621.3.4, URL: https://doi.org/10.11646/zootaxa.5621.3.4
03A787FE7B3EFFFFFF7BAD07FE3D54D6.taxon	description	With character states of Oppiidae (Norton and Behan-Pelletier 2009). Measurements: Length about 240 – 390. Integument. Body nearly smooth; sometimes tuberculate band present instead mediobasal part of costula; lateral side of body between bothridium and acetabula densely tuberculate. Prodorsum. Rostrum tripartite, sometimes rounded or concave. Costulae and transcostula fused, forming arch-like or trapezoid complex; rarely, complex indistinct or costulae developed partially. Lateral arch-like prodorsal ridge usually present. Interbothridial region usually with two or three pairs of muscle sigillae. Interbothridial and postbothridial tubercles absent but prodorsobasal part sometimes with short ridges or tubercle-like thickenings. Rostral, lamellar, interlamellar, and exobothridial setae well developed, setiform; ro and le short to long, le and in short; le inserted closer to in than to ro. Bothridial seta long, ciliate (its mediodistal part with well developed unilaterally lanceolate expansion) or pectinate (its mediodistal part without expansion or with indistinct expansion). Notogaster. Anterior margin convex or straight medially. Humeral region without tooth and crista. Ten pairs of setiform setae: c short; other setae short to long. Gnathosoma. Subcapitulum diarthric. Palp setation: 0 - 2 - 1 - 3 - 9 (+ ω); solenidion long, bacilliform, pressed to surface, located in mediodistal part of dorsal part of tarsus. Chelicera chelate-dentate. Epimeral and lateral podosomal regions. Epimere IV of normal length; border IV present. Epimeral setal formula: 3 - 1 - 3 - 3; all setae setiform. Ventrosejugal tubercle absent. Pedotectum I represented by small lamina. Discidium present. Anogenital region. Anogenital setal formula: 6 - 1 - 2 - 3; all setae setiform. Adanal seta ad 1 posterior, ad 2 lateral, ad 3 anterolateral to anal plate, distance ad 3 – ad 3 longer than ag – ag and ad 2 – ad 2. Adanal lyrifissure located close and parallel to anal aperture. Legs. Tibia I without anterodorsal projection. Tarsus II with two solenidia. Description of Wallworkella southensis sp. nov. (Figures 5, 6)	en	Ermilov, Sergey G. (2025): Taxonomic contribution to knowledge of the oribatid mite genera Corynoppia, Ramusella and Wallworkella (Acari, Oribatida, Oppiidae). Zootaxa 5621 (3): 353-370, DOI: 10.11646/zootaxa.5621.3.4, URL: https://doi.org/10.11646/zootaxa.5621.3.4
03A787FE7B3EFFFFFF7BAD07FE3D54D6.taxon	materials_examined	Type material. Holotype (female) and four paratypes (one male and three females): southern Ethiopia, South Ethiopia Regional State, Gamo Zone, 6 ° 01 ’ 36.7 ’’ N, 37 ° 35 ’ 42.7 ’’ E, 1170 m a. s. l., 5 km East from the town Arba Minch, 1 km from the lake Abai, mineral soil (0 – 5 cm) in a mixed forest on the terrace (first layer of forest: Celtis sp., Ficus sycomorus, Schefflera sp., Acacia sp.; second layer of forest: Lemon sp., Coffee arabica) on the brown (black-brown) soil with light-medium loam soil texture, 7. XII. 2018, dry season (L. B. Rybalov). The holotype is deposited in the collection of the Senckenberg Museum of Natural History, Görlitz, Germany; four paratypes are deposited in the collection of the University of Tyumen, Museum Zoology, Tyumen, Russia. All specimens are preserved in 70 % solution of ethanol with a drop of glycerol.	en	Ermilov, Sergey G. (2025): Taxonomic contribution to knowledge of the oribatid mite genera Corynoppia, Ramusella and Wallworkella (Acari, Oribatida, Oppiidae). Zootaxa 5621 (3): 353-370, DOI: 10.11646/zootaxa.5621.3.4, URL: https://doi.org/10.11646/zootaxa.5621.3.4
03A787FE7B3EFFFFFF7BAD07FE3D54D6.taxon	diagnosis	Diagnosis. Body length: 240 – 255. Rostrum rounded. Costulae and transcostula not visible. Lateral ridge long. Rostral seta medium-sized, setiform, slightly barbed; lamellar and interlamellar setae short, setiform, roughened; bothridial seta long, with unilaterally lanceolate head bearing setiform apex and three long, setiform, smooth branches and one short (distal) cilium unilaterally. Anterior margin of notogaster straight. Dorsal notogastral setae comparatively short, setiform, sparsely barbed or nearly smooth. Epimeral and anogenital setae short, setiform, smooth (except roughened 3 c and 4 c). Discidium with broadly rounded top.	en	Ermilov, Sergey G. (2025): Taxonomic contribution to knowledge of the oribatid mite genera Corynoppia, Ramusella and Wallworkella (Acari, Oribatida, Oppiidae). Zootaxa 5621 (3): 353-370, DOI: 10.11646/zootaxa.5621.3.4, URL: https://doi.org/10.11646/zootaxa.5621.3.4
03A787FE7B3EFFFFFF7BAD07FE3D54D6.taxon	description	Description of adult. Measurements. Body length: 255 (holotype), 240 (male paratype), 240 – 255 (female paratypes); notogastral width: 120 (holotype), 105 (male paratype), 113 – 120 (female paratypes). Integument (Fig. 5 C). Body color light brown. Body nearly smooth; region of costula and region between bothridium and acetabula I – III with typical dense tubercles (their diameter up to 2). Prodorsum (Figs 5 A, C). Rostrum rounded. Costular-transcostular complex absent, but its vague outlines are sometimes partially hardly visible. Interbothridial muscle sigillae not visible. Lateral ridge long. Rostral seta (19 – 22) setiform, slightly barbed; lamellar (7 – 9), interlamellar (11 – 13) and exobothridial (7 – 9) setae setiform, roughened; bothridial seta (45 – 49) with long, smooth stalk and shorter, unilaterally lanceolate head bearing setiform apex and three long, setiform, smooth branches and one short (distal) cilium unilaterally. Notogaster (Figs 5 A, C; 6 A). Anterior margin of notogaster straight. Notogastral seta c (4 – 6) setiform, smooth; other setae (la, lm, lp, h 1 – h 3, p 2, p 33: 17 – 19; p 1: 11 – 13) setiform, sparsely barbed or nearly smooth. Opisthonotal gland opening and lyrifissures ia, im, ip well visible (ih, ips not found). Gnathosoma (Figs 6 B – D). Subcapitulum size: 56 – 60 × 41 – 45; all subcapitular setae (11) setiform, nearly smooth; all adoral setae (4) setiform, smooth. Palp length: 37; with typical setation: 0 - 2 - 1 - 3 - 9 (+ ω); postpalpal seta (4) spiniform, smooth. Chelicera length: 52 – 56; setae (cha: 17 – 19; chb: 11) setiform, barbed. Epimeral and lateral podosomal regions (Figs 5 B, C). Epimeres with typical epimeral setal formula (3 - 1 - 3 - 3); setae 3 c (11 – 15) and 4 c (9 – 11) setiform, roughened; others (7) setiform, smooth. Discidium with broadly rounded top. Anogenital region (Figs 5 B, C; 6 A). With typical anogenital setal formula (6 - 1 - 2 - 3); genital (4 – 6), aggenital (11 – 15), anal (11 – 15), and adanal (11 – 15) setae setiform, smooth. Adanal lyrifissure distinct, in typical position for genus (close and parallel to lateral side of anal plate). Legs (Figs 6 E – H). Claw of each leg smooth, with tooth ventrobasally. All leg femora with hardly visible ventral porosity. Trochanter III with posterior tubercle. Formulas of leg setation and solenidia: I (1 - 5 - 2 - 4 - 20) [1 - 2 - 2], II (1 - 5 - 2 - 4 - 16) [1 - 1 - 2], III (2 - 3 - 1 - 3 - 15) [1 - 1 - 0], IV (1 - 2 - 2 - 3 - 12) [0 - 1 - 0]; homology of setae and solenidia indicated in Table 1; seta s on tarsus I eupathidial; setae a ′′ and pv ′′ on tarsus IV modified (brush-like); solenidia ω 1 on tarsi I, ω 1 and ω 2 on tarsus II and σ on genu III nearly bacilliform, φ 1 on tibia I and φ on tibia IV subflagellate; other solenidia setiform or rod-like.	en	Ermilov, Sergey G. (2025): Taxonomic contribution to knowledge of the oribatid mite genera Corynoppia, Ramusella and Wallworkella (Acari, Oribatida, Oppiidae). Zootaxa 5621 (3): 353-370, DOI: 10.11646/zootaxa.5621.3.4, URL: https://doi.org/10.11646/zootaxa.5621.3.4
03A787FE7B3EFFFFFF7BAD07FE3D54D6.taxon	discussion	Remarks. Wallworkella southensis sp. nov. is similar to W. tetraciliata (Ermilov, 2018) (in Ermilov & Rybalov 2018) from Ethiopia in having rounded rostrum and ciliate bothridial seta. However, the new species differs from the latter by smaller body size (length: 240 – 255 versus 298 – 315), the indistinct (versus well developed) costular-transcostular complex, the relative length of some prodorsal setae (ro longer then in versus ro shorter than in), the morphology of anterior margin of the notogaster (straight versus convex), and the length of the dorsal notogastral setae (short, lm shorter than 1 / 2 of distance lm – lp versus comparatively long, lm longer than 1 / 2 of distance lm – lp).	en	Ermilov, Sergey G. (2025): Taxonomic contribution to knowledge of the oribatid mite genera Corynoppia, Ramusella and Wallworkella (Acari, Oribatida, Oppiidae). Zootaxa 5621 (3): 353-370, DOI: 10.11646/zootaxa.5621.3.4, URL: https://doi.org/10.11646/zootaxa.5621.3.4
03A787FE7B3EFFFFFF7BAD07FE3D54D6.taxon	etymology	Etymology. The species name southensis refers to the place of origin, South Ethiopia Regional State.	en	Ermilov, Sergey G. (2025): Taxonomic contribution to knowledge of the oribatid mite genera Corynoppia, Ramusella and Wallworkella (Acari, Oribatida, Oppiidae). Zootaxa 5621 (3): 353-370, DOI: 10.11646/zootaxa.5621.3.4, URL: https://doi.org/10.11646/zootaxa.5621.3.4
03A787FE7B3EFFFFFF7BAD07FE3D54D6.taxon	distribution	General remarks on Wallworkella species Balogh and Balogh (1990) synonymized Wallworkella longiramosa (Woas, 1986) with Wallworkella cervifer (Mahunka, 1983). As noted by Ermilov (2024), perhaps, the synonymy is correct, however, according to the original descriptions (Mahunka 1983; Woas 1986) of these species, there are some differences between these species, therefore, both species are given in the key below as independent species.	en	Ermilov, Sergey G. (2025): Taxonomic contribution to knowledge of the oribatid mite genera Corynoppia, Ramusella and Wallworkella (Acari, Oribatida, Oppiidae). Zootaxa 5621 (3): 353-370, DOI: 10.11646/zootaxa.5621.3.4, URL: https://doi.org/10.11646/zootaxa.5621.3.4
