Stenaptinus tamdaoensis (Kischenhofer, 2010)

Fedorenko, D. N., 2020, Stenaptinus (Coleoptera: Carabidae: Brachininae) of Vietnam. Note 1, Russian Entomological Journal 29 (4), pp. 361-376 : 371-373

Stenaptinus tamdaoensis (Kischenhofer, 2010)

Figs 2 , 17 , 35 , 65, 69 , 72 .

Kischenhofer, 2010: 33, 38 ( Pheropsophus ; Tam Dao, N-Vietnam).

MATERIAL. 51 specimens, including nine ( ZISP) : ♂, Northern Vietnam, Lao Cai Province, Phang Xi Pang Mt. , 5.III.1962 (O.N. Kabakov) ; ♂, mountains near Sa Pa , 1600–2000 m, 24.V.1963 (O.N. Kabakov) ; ♂ ♀, Vinh Phuc / Thai Nguen Province, mountains near Tam Dao , 900 m, 9.VI.1963 (O.N. Kabakov) ; 3♂♂, 2♀♀, Tam Dao , 8– 13.IV.1986 (Gorokhov) . 42 specimens ( SIEE) : 2♂♂, 2♀♀, Cao Bang Province, 40 km W of Cao Bang, Phia Oac Mt. , 22º36´50´´N / 105º52.0´E, h~ 1760 m, broad-leaved & bamboo forest, 3–11.X.2018 (D. Fedorenko) ; 10♂♂, 18♀♀, same data, except for 22º36´30´´N / 105º52´20´´E, h~ 1600–1650 m, broad-leaved forest ; ♂, same data, except for 22º37´40´´N / 105º54´40´´E, h~ 850 m, boggy wasteland ; 4♂♂, 5♀♀, same data, except for 22º36´27´´N / 105º52.0´E, h= 1600–1800 m, 22.V–6.VI.2018 (A. Abramov) .

Aedeagus examined in 14 males.

REDESCRIPTION.Very similar to a S. guanxiensis in most characters except as follows: Body ( Fig. 72 ) generally smaller, BL 10.4–13.2 mm, and paler in colour, yellowish red, with elytra rather pale brown, to dorsally black, with head indistinctly pale in front of mid-eye level; when traceable, pale pattern on head not or little contrasting, often U-shaped or distinct only laterally due to frons infuscated between frontal foveae. Body little shiny, with rather coarse microsculpture. Pilosity (and punctation of head and pronotum) usually slightly denser, more so on pronotum and elytra. Prothoracic notopleura glabrous in basal half, with a few short and erect setae only traceable in specimens with very dense body pilose.

Head: genae mostly short and smoothly extended into neck; frontal foveae varying considerably in depth, from vague, very shallow, not extended onto clypeus, to deep, pit-like at frontoclypeal suture and reaching clypeal seta. Pronotum as for S. dissolutus . Elytral ridges very fine all along, some of them not seldom broken in basal half, ridge 6 mostly entire.

Abdomen ( Figs 2 , 17 ): Tergite VII densely and rather finely punctate and pilose, with a row of 14–16 apical setae in female and minute punctures almost imperceptible, very few and very shallow.

Aedeagus ( Figs 65, 69 ): apex in lateral view tapered, in lateral view long, triangular, with right margin straight and left margin slightly convex. Internal sac with distal basal bulb very large, as large as aedeagus apex in dorsal view; body in lateral view inflated dorsobasally and almost adjoining proximal basal bulbs.

Female gonocoxite IX ensiform, rather short and slightly curved ( Fig. 35 ). Receptacle as in S. guanxiensis .

GEOGRAPHIC DISTRIBUTION. Northern Vietnam (Cao Bang, Vinh Phuc and Lao Cai provinces); occurrence in southern China (Yunnan and/or Guanxi) is also probable.

HABITATS AND HABITS. A mid-montane forest-dweller frequent at 1600–1860 m altitudes, occurring also at lower heights (up to 850 m a.s.l.). — See also the respective section for S. guanxiensis and for the group.

COMMENTS. This species was described only based on the female holotype distinctive from similar consubgeners in having the neck smooth (or almost so, as specified in the key alone) [Kischenhofer, 2010], and digital image of the holotype [ibid., Fig. 47 ] shows the neck very finely rugulose. This character have only been observed in some specimens from the type locality while many others have the neck distinctly rugulose, albeit slightly less so than in the other species of the group.

Figures

Figs 1—15. Sternite VIII in female: 1 — Stenaptinus beckeri; 2 — S. tamdaoensis; 3 — S. tripustulatus; 4 — S. dissolutus from China; 5 — S. obliteratus; 6 — S. montanus sp.n.; 7 — S. dissolutus from Vietnam; 8 — S. guanxiensis; 9 — S. bidoupensis; 10 — S. dissolutus kalyakini; 11 — S. glabricollis sp.n.; 12 — S. ngoclinhensis; 13 — S. bipartitus; 14 — Pheropsophus ecuadorensis Hubenthal, 1911; 15 — S. lissoderus from Thailand; ic — internal carina; sa — apical setae. Scale bar: 1 mm. Рис. 1—15. Стернит VIII самки: 1 — Stenaptinus beckeri; 2 — S. tamdaoensis; 3 — S. tripustulatus; 4 — S. dissolutus иЗ КитаЯ; 5 — S. obliteratus; 6 — S. montanus sp.n.; 7 — S. dissolutus иЗ Вьетнама; 8 — S. guanxiensis; 9 — S. bidoupensis; 10 — S. dissolutus kalyakini; 11 — S. glabricollis sp.n.; 12 — S. ngoclinhensis; 13 — S. bipartitus; 14 — Pheropsophus ecuadorensis Hubenthal, 1911; 15 — S. lissoderus иЗ Таиланда; ic — внутренний киль; sa — апикальные Щетинки. МасШтаб: 1 мм.

Figs 16—30. Tergite VIII in female: 16 — Stenaptinus beckeri; 17 — S. tamdaoensis; 18 — S. ngoclinhensis; 19 — S. dissolutus from China; 20 — S. guanxiensis; 21 — S. montanus sp.n.; 22 — S. dissolutus kalyakini; 23 — S. obliteratus; 24 — S. bidoupensis; 25 — S. dissolutus from Vietnam; 26 — S. glabricollis sp.n.; 27 — S. tripustulatus; 28 — Pheropsophus ecuadorensis; 29 — S. bipartitus; 30 — S. lissoderus from Thailand; adr — apical depigmented region; as — anterior sclerotized region; psa — postero-apical sclerotized region; psa — posteromedian sclerotized region. Scale bar: 1 mm. Рис. 16—30. Тергит VIII самки: 16 — Stenaptinus beckeri; 17 — S. tamdaoensis; 18 — S. ngoclinhensis; 19 — S. dissolutus иЗ КитаЯ; 20 — S. guanxiensis; 21 — S. montanus sp.n.; 22 — S. dissolutus kalyakini; 23 — S. obliteratus; 24 — S. bidoupensis; 25 — S. dissolutus иЗ Вьетнама; 26 — S. glabricollis sp.n.; 27 — S. tripustulatus; 28 — Pheropsophus ecuadorensis; 29 — S. bipartitus; 30 — S. lissoderus иЗТаиланда; adr— апикальнаЯ депигментированнаЯобласть; as— переднЯЯ склеротиЗациЯ; psa— постеро-апикальнаЯсклеротиЗациЯ; psm — постеро-медиальнаЯ склеротиЗациЯ. МасШтаб: 1 мм.

Figs 31—45. Urite IX ventrally in female: 31 — Stenaptinus beckeri; 32 — S. lissoderus from Thailand; 33 — S. tripustulatus; 34 — S. dissolutus from China; 35 — S. tamdaoensis; 36 — S. bidoupensis; 37 — S. dissolutus kalyakini; 38 — S. guanxiensis; 39 — S. montanus sp.n.; 40 — S. dissolutus from Vietnam; 41 — S. obliteratus; 42 — S. ngoclinhensis; 43 — S. glabricollis sp.n.; 44 — Pheropsophus ecuadorensis; 45 — S. bipartitus; bc — bursa copulatrix; gcx — gonocoxite; lsc — lateral sclerite. Scale bar: 1 mm. Рис. 31—45. Урит IX самки, вентрально: 31 — Stenaptinus beckeri; 32 — S. lissoderus иЗ Таиланда; 33 — S. tripustulatus; 34 — S. dissolutus иЗ КитаЯ; 35 — S. tamdaoensis; 36 — S. bidoupensis; 37 — S. dissolutus kalyakini; 38 — S. guanxiensis; 39 — S. montanus sp.n.; 40 — S. dissolutus иЗ Вьетнама; 41 — S. obliteratus; 42 — S. ngoclinhensis; 43 — S. glabricollis sp.n.; 44 — Pheropsophus ecuadorensis; 45 — S. bipartitus; bc — копулЯтивнаЯ сумка; gcx — гонококсит; lsc — латеральный склерит. МасШтаб: 1 мм.

Figs 54—69. Median lobe of aedeagus with everted and inflated internal sac: 54, 58 — Stenaptinus obliteratus; 55, 59 — S. dissolutus from Vietnam; 56, 60 — S. dissolutus from China; 57, 61 — S. glabricollis sp.n.; 62, 66 — S. montanus sp.n.; 63, 67 — S. bidoupensis; 64, 68 — S. guanxiensis; 65, 69 — S. tamdaoensis; 54—57, 62—65 — left aspect; 58—61, 66—69 — dorso-apical aspect; b — body of internal sac; bbd — distal basal bulb; bbp — proximal basal bulb. Scale bars: 1 mm. Рис. 51—66. СреднЯЯ долЯ Эдеагуса с вывернутым и надутым внутренним меШком: 54, 58 — Stenaptinus obliteratus; 55, 59 — S. dissolutus иЗ Вьетнама; 56, 60 — S. dissolutus иЗ КитаЯ; 57, 61 — S. glabricollis sp.n.; 62, 66 — S. montanus sp.n.; 63, 67 — S. bidoupensis; 64, 68 — S. guanxiensis; 65, 69 — S. tamdaoensis; 54—57, 62—65 — слева; 58—61, 66—69 — дорЗо-апикально; b — тело внутреннего меШка; bbd — дистальный баЗальный пуЗырь; bbp — проксимальный баЗальный пуЗырь. МасШтаб: 1 mm.

Figs 70—75. Dorsal habitus: 70 — Stenaptinus dissolutus from Vietnam; 71 — S. dissolutus from China; 72 — S. tamdaoensis; 73 — S. guanxiensis; 74 — S. obliteratus; 75 — S. montanus sp.n., male, paratype. Рис. 70—75. Габитус, дорЗально: 70 — Stenaptinus dissolutus иЗ Вьетнама; 71 — S. dissolutus иЗ КитаЯ; 72 — S. tamdaoensis; 73 — S. guanxiensis; 74 — S. obliteratus; 75 — S. montanus sp.n., паратип, самец.

Figs 46—53. Apex of abdomen and reproductive tract of female: 46—47 — Stenaptinus montanus sp.n.; 48 — S. glabricollis sp.n.; 49 — S. guanxiensis; 50 — S. dissolutus from Vietnam; 51 — S. dissolutus from China; 52 — S. obliteratus; 53 — S. bipartitus; bc — bursa copulatrix; gcx — gonocoxite IX; rp — receptacle; sa — apical setae; sg — spermathecal gland. Scale bars: 1 mm. Рис. 46—53. ВерШина брюШка и репродуктивный тракт самки: 46—47 — Stenaptinus montanus sp.n.; 48 — S. glabricollis sp.n.; 49 — S. guanxiensis; 50 — S. dissolutus иЗ Вьетнама; 51 — S. dissolutus иЗ КитаЯ; 52 — S. obliteratus; 53 — S. bipartitus; bc — копулЯтивнаЯ сумка; gcx — гонококсит IX; rp — рецептакул; sa — апикальные Щетинки; sg — желеЗа сперматеки. МасШтаб: 1 мм.