Stenaptinus dongnaiensis Fedorenko, 2021

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

7. Stenaptinus dongnaiensis Fedorenko , sp.n.

Figs 51, 55 , 72 , 106–107 .

MATERIAL. Holotype ♂ ( ZMMU) with label ‘S[outhern] Vietnam, N[orthern part of] Dongnai Province , Nam Cat Tien Nat [ional]. Park, Exped[ition of]. Russ [ian].-Vietnamese Tropical Centre, at light HQL450, 21.X.2004, leg. D.Fedorenko’ . Paratypes, 2♂♂ ( SIEE), same data except for dates 5.XII.2004 or 17.VI.2005. — Aedeagus examined in all males.

DIAGNOSIS. No difference from S. fimbriatus except in colour pattern ( Figs 72 , 106–107 ), and aedeagus is distinctive. Specifically, vertex with a small, subtransverse pentagonal to rhomboidal black patch; pronotal pale spots large, separated or fused along midline, reaching lateral margin, so that pronotum laterally pale or with lateral bead vaguely infuscated in basal half; elytral transverse band wide. Aedeagus ( Figs 51, 55 ): apex of median lobe barely tapered in lateral view (vs. triangular in S. fimbriatus ), similar yet more symmetrical in dorsal view. Internal sac with the body much larger than proximal basal bulbs; these projecting laterad and well-visible in dorsal view.

DESCRIPTION. BL 17.1–18.5 mm; pronotum broadest two fifths from apex, basal angles right or slightly obtuse, lateral bead and groove very fine throughout. For the other details see the diagnosis.

GEOGRAPHIC DISTRIBUTION. Known from the type locality only.

NAME. Topotypic.

HABITATS AND HABITS. The three specimens have been collected at light, at the edge of tropical monsoon forest about 100 m distant from the Dong Nai River .

COMMENTS. The new species is very close to S. fimbriatus and very similar to its paler specimens.

Figures

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 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.