Stenaptinus sumatrensis Fedorenko, 2021

Fedorenko, D. N., 2021, Stenaptinus (Coleoptera: Carabidae: Brachininae) of Vietnam. Note 2, Russian Entomological Journal 30 (1), pp. 25-42 : 38-39

8. Stenaptinus sumatrensis Fedorenko , sp.n.

Figs 4 , 14 , 52, 54 , 56 , 70 , 73 , 108–109 .

MATERIAL. Holotype ♂ ( ZMMU) labeled ‘ Sumatra, Barat Province, Maninjau vill., 00°17´09´´N / 100°13´54´´E, h= 498 m, 18– 19.XII.2014, leg. I. Melnik’. See also ‘comments’ to S. fimbriatus .

DIAGNOSIS. No differences from melanistic specimens of S. fimbriatus , except that aedeagus is distinctive and elytra shorter.

DESCRIPTION. Macropterous species ( Fig. 73 , 108– 109 ). BL 16 mm. Head pale, with a U-shaped patch on vertex which is parallel-sided and merged into black neck. Pronotum black, each side with a small, somewhat vague oblong spot almost reaching lateral margin. Elytra black, each with pale pattern consisting of a small humeral spot, a very narrow, vague, zigzag patch spanning ridges 5 to 7, extreme apical margin, and apices of elytral ridges just in front. Dorsum glabrous, except for a few setules behing supra-ocular seta, very sparse pilosity at pronotal base and apex, and individual setules scattered over elytral disc; this latter also with rather dense yet nearly imperceptible microscopic ciliae.

Pronotum as wide as long, broadest just in front of middle, slightly convex at basal margin and sinuate at apex; sides subsinuate a fifth from base. Base slightly wider than apex; lateral bead and groove very fine, almost obliterate in front of basal angles; these very slightly obtuse and slightly blunted.

Abdomen ( Figs 4 , 14 ): tergite VII finely and rather unevenly punctate, with larger punctures small and fine punctures missing here and there.

Aedeagus ( Figs 52, 54 ) as for S. dongnaiensis sp.n., except for internal sac having the body larger and proximal basal bulb barely divided into two, indistinctly projecting laterad and thence invisible in dorsal view.

Female genitalia and reproductive tract ( Figs 56 , 70 ) as for S. fimbriatus , except that gonocoxite IX is slightly shorter and wider.

GEOGRAPHIC DISTRIBUTION. Known from the type locality only.

NAME. Topotypic.

HABITATS AND HABITS. No data.

COMMENTS. The holotype is hardly different from melanistic specimens of S. fimbriatus (those with infuscated neck), but aedeagus is very similar to that of S. dongnaiensis sp.n. This suggests that S. sumatrensis sp.n. and S. dongnaiensis sp.n. may only be subspecies of one species and allows me to provisionally identify a female specimen from Java (100 km of Djakarta, Mt. Pangrango, 1000 m, 9– 14.X.1999, A.V. Gorokhov leg., ZISP) as sumatrensis sp.n., with reservation that it may be S. fimbriatus . This female ( Figs 4 , 14 , 56 , 70 , 109 ) has the tergite VII with apical setae less strongly curved at apices and the gonocoxite IX slightly shorter and wider than in female S. fimbriatus .

Figures

Figs 1–10. Stenaptinus spp., sternite VIII in female: 1 — S. stenoderus; 2 — S. lissoderus; 3, 6 — S. agnatus from Cat Tien; 4 — S. sumatrensis sp.n.; 5 — S. c. consularis; 6 — S. montanus sp.n.; 7 — S. fimbriatus; 8 — S. consularis flaviceps ssp.n.; 9 — S. javanus; 10 — S. marginicollis. Scale bars: 1 mm. Рис. 1–10. Stenaptinus spp., стернит VIII самки: 1 — S. stenoderus; 2 — S. lissoderus; 3, 6 — S. agnatus иЗ Катьена; 4 — S. sumatrensis sp.n.; 5 — S. c. consularis; 6 — S. montanus sp.n.; 7 — S. fimbriatus; 8 — S. consularis flaviceps ssp.n.; 9 — S. javanus; 10 — S. marginicollis. МасШтаб: 1 мм.

Figs 11–20. Stenaptinus spp., tergite VIII in female: 11 — S. stenoderus; 12 — S. lissoderus; 13, 16 — S. agnatus from Cat Tien; 14 — S. sumatrensis sp.n.; 15 — S. c. consularis; 16 — S. montanus sp.n.; 17 — S. fimbriatus; 18 — S. consularis flaviceps ssp.n.; 19 — S. javanus; 20 — S. marginicollis; adr — apical depigmented region; psm — posteromedian sclerotized region. Scale bars: 1 mm. Рис. 11–20. Stenaptinus spp., тергит VIII самки: 11 — S. stenoderus; 12 — S. lissoderus; 13, 16 — S. agnatus иЗ Катьена; 14 — S. sumatrensis sp.n.; 15 — S. c. consularis; 16 — S. montanus sp.n.; 17 — S. fimbriatus; 18 — S. consularis flaviceps ssp.n.; 19 — S. javanus; 20 — S. marginicollis; adr — апикальнаЯ депигментированнаЯ область; psm — постеро-медиальнаЯ склеротиЗациЯ. МасШтаб: 1 мм.

Figs 43–55. Stenaptinus spp., median lobe of aedeagus with everted and inflated internal sac: 43–47 — S. agnatus from Cat Tien (43–45) and Kon Ka Kinh (46–47); 48–50, 53 — S. fimbriatus from Cat Tien (48) and Sumatra (49–50, 53); 51, 55 — S. dongnaiensis sp.n.; 52, 54 — S. sumatrensis sp.n.; 43–44, 47–48, 53–55 — dorso-apical aspect; 45–46, 49–52 — left aspect; dbl — left distal basal bulb. Scale bar: 1 mm. Рис. 43–55. Stenaptinus spp., среднЯЯ долЯ Эдеагуса с вывернутым и надутым внутренним меШком: 43–47 — S. agnatus иЗ Катьена (43–45) и КонкакинЯ (46–47); 48–50, 53 — S. fimbriatus иЗ Катьена (48) и с Суматры (49–50, 53); 51, 55 — S. dongnaiensis sp.n.; 52, 54 — S. sumatrensis sp.n.; 43–44, 47–48, 53–55 — dorso-apical aspect; 45–46, 49–52 — left aspect; dbl — левый дистальный баЗальный пуЗырь. МасШтаб: 1 мм.

Figs 56–64. Stenaptinus spp., urite IX in female, ventral aspect: 56 — S. sumatrensis sp.n.; 57 — S. consularis flaviceps ssp.n. from Gia Lai Prov.; 58 — S. stenoderus; 59 — S. javanus; 60 — S. c. consularis; 61 — S. agnatus; 62 — S. marginicollis; 63 — S. fimbriatus; 64 — S. lissoderus; bc — bursa copulatrix; rp — spermathecal receptacle; sg — spermathecal gland. Scale bars: 1 mm. Рис. 56–64. Stenaptinus spp., урит IX самки вентрально: 56 — S. sumatrensis sp.n.; 57 — S. consularis flaviceps ssp.n. from Gia Lai Prov.; 58 — S. stenoderus; 59 — S. javanus; 60 — S. c. consularis; 61 — S. agnatus; 62 — S. marginicollis; 63 — S. fimbriatus; 64 — S. lissoderus; bc — копулЯтивнаЯ сумка; rp — семеприемник сперматеки; sg — желеЗа сперматеки. МасШтаб: 1 мм.

Figs 65–70. Stenaptinus spp., female reproductive tract: 65 — S. stenoderus; 66 — S. fimbriatus; 67 — S. javanus; 68 — S. marginicollis; 69 — S. agnatus; 70 — sumatrensis sp.n.; bc — bursa copulatrix; ov — common oviduct; rp — spermathecal receptacle; sc — seminal canal; sg — spermathecal gland. Scale bar: 1 mm. Рис. 65–70. Stenaptinus spp., репродуктивный тракт самки: 65 — S. stenoderus; 66 — S. fimbriatus; 67 — S. javanus; 68 — S. marginicollis; 69 — S. agnatus; 70 — sumatrensis sp.n.; bc — копулЯтивнаЯ сумка; ov — непарный Яйцевод; rp — семеприемник сперматеки; sa — апикальные Щетинки; sс — семенной канал; sg — желеЗа сперматеки. МасШтаб: 1 мм.

Figs 71–73. Stenaptinus spp., dorsal habitus: 71 — S. consularis flaviceps ssp.n., female, paratype; 72 — S. dongnaiensis sp.n., paratype; 73 — S. sumatrensis sp.n., holotype. Рис. 71–73. Stenaptinus spp., габитус дорЗально: 71 — S. consularis flaviceps ssp.n., паратип, самка; 72 — S. dongnaiensis sp.n., паратип; 73 — S. sumatrensis sp.n., голотип.

Figs 106–111. Stenaptinus spp., dorsal pattern: 106–107 — S. dongnaiensis sp.n., holotype and paratype; 108–109 — S. sumatrensis sp.n., holotype and paratype; 110 — S. madagascariensis; 111 — S. fumigatus. Рис. 106–111. Stenaptinus spp., окраска верха: 106–107 — S. dongnaiensis sp.n., голотип и паратип; 108–109 — S. sumatrensis sp.n., голотип и паратип; 110 — S. madagascariensis; 111 — S. fumigatus.