Lesticus attenuatus Fedorenko, 2022

Fedorenko, D. N., 2022, New or little-known Lesticus Dejean, 1828 (Coleoptera: Carabidae: Pterostichini) from Vietnam, Russian Entomological Journal 31 (3), pp. 260-275 : 270

6. Lesticus attenuatus Fedorenko , sp.n.

Figs 3 , 15 , 29–30, 38–39 , 46–48, 54.

MATERIAL. Holotype ♂ ( ZMMU) and paratype ♀ ( SIEE) , labelled ‘S Vietnam, Lam Dong Prov. / Bi Doup-Nui Ba [Nature] Reserve / env. Long Lanh ,/ 12°10´44´´N 108°40´44´´E / h= 1400–1600 m 1–2./ leg. D.Fedorenko. IV.2008 ’. Paratypes ( ZMMU, ZIN, SIEE): 17♂♂, 8♀♀ : 10♂♂, 6♀♀ , same data, except for various dates between 1. and 18.IV.2008, as well as between 30.IV. and 9.V.2009; 4♂♂, ♀ , same data, except for 12º11´N / 108º42´E, ~ 4 km / SSE of Hon Giao Mt. / h= 1500–1800 m 2–3. or 7–8.IV.2008; 3♂♂, ♀ , same data, except for 12º07´N 108º39´20´´E, Bi Doup Mt., N [orthern] slope, h= 1700–1900 m, 31.III. or 16.IV.2008, or 4.V.2009. — Internal sac of aedeagus examined in four males .

DIAGNOSIS. A slender large-sized species of the auricollis species group. Body dorsum contrastingly bicoloured, metepisternum short; protarsomere 1 with rudimentary ventral pad in female (Fig. 54); pronotal basal foveae smooth. Internal sac of aedeagus ( Figs 29–30 ) as for L. nubilus except for (1) bulb e asymmetrical, with dorsal branch, ed, very large and set perpendicular to median lobe of aedeagus and (2) dorsal process cd of bulb c rather short and not apically curved.

DESCRIPTION. As for L. bellus sp.n. except as follows. Body slender. BL 24.3–26.6 mm. Head green, pronotum green, cupreous along sides, more so in basal half; elytra black or purplish and violaceous along sides, or very deep violaceous. Dorsal micropunctation less distinct.

Head ( Fig. 3 ): frontal sulci long and deep or very deep. Terminal labial palpomere narrower, barely longer than wide at apex in male, about three fifths as wide at apex as long in female.

Pronotum ( Fig. 15 ) 1/4–1/3 wider than long, sides straight in front of basal angles. Base about a tenth wider than apex. Basal foveae flat and smooth. Inner basal barely converging apicad, smooth at bottom.

Elytra oblong, 3/5–3/4 longer than wide. Basal ridge inwardly reaching stria 2 or 3. Striae deep, finely to moderately punctate, intervals nearly flat to moderately convex. Interval 3 with 3–4 discal setae, middle two of four setae present varying between stria 2 and 3 in position. USS: 21– 24.

Propleura in apical half, sides of metaventrite, mes- and metepisterna, as well as abdominal sternites II and III coarsely and more or less densely punctate.

Legs: mesofemur with three anteroventral setae, sometimes with two on one side.

GEOGRAPHIC DISTRIBUTION. Only known from the Dalat Plateau.

NAME. Refers to the slender body.

HABITATS AND HABITS. Rather frequent in monsoon broad-leaved forests.

Figures

Figs 1–12. Head: 1–2 — Lesticus nubilus, 2♂♂; 3 — L. attenuatus sp.n., ♂ paratype; 4 — L. p. praestans, ♂ from Cuc Phuong NP, Vietnam; 5 — L. p. mouhotii, ♀ from Mondulkiri Prov., Cambodia; 6 — L. auricollis, ♂ from Bac Giang Prov., Vietnam; 7–8 — L. verticillatus sp.n., ♂ paratype from Song Thanh NP and ♂ holotype; 9 — L. bellus sp.n., ♀ holotype; 10 — L. buqueti, ♀; 11 — L. lakhonus, ♀; 12 — L. laevis sp.n., ♂ holotype; 1, 10–11 — Cat Tien NP, Vietnam; 2 — Mae Vong env., Thailand. Рис. 1–12. Голова: 1–2 — Lesticus nubilus, 2♂♂; 3 — L. attenuatus sp.n., паратип ♂; 4 — L. p. praestans, ♂ иЗ Нац. парка Кыкфыонг, Вьетнам; 5 — L. p. mouhotii, ♀ иЗ пров. Мондулкири, Камбоджа; 6 — L. auricollis, ♂ иЗ пров. БакЗЯн, Вьетнам; 7–8 — L. verticillatus sp.n., паратип ♂ иЗ нац. парка Сонгтхань и голотип ♂; 9 — L. bellus sp.n., голотип ♀; 10 — L. buqueti, ♀; 11 — L. lakhonus, ♀; 12 — L. laevis sp.n., ♂ голотип; 1, 10–11 — Нац. парк Катьен, Вьетнам; 2 — окр. Мае Вонг, Таиланд.

Figs 13–24. Pronotum: 13–14 — Lesticus nubilus, 2♂♂; 15 — L. attenuatus sp.n., ♂ paratype; 16 — L. p. praestans, ♂ from Cuc Phuong NP, Vietnam; 17 — L. p. mouhotii, ♀ from Mondulkiri Prov., Cambodia; 18 — L. auricollis, ♂ from Bac Giang Prov., Vietnam; 19– 20 — L. verticillatus sp.n., ♂ paratype from Song Thanh NP and ♂ holotype; 21 — L. bellus sp.n., ♀ holotype; 22 — L. buqueti, ♀; 23 — L. lakhonus, ♀; 24 — L. laevis sp.n., ♂ holotype; 13, 22–23 — Cat Tien NP, Vietnam; 14 — Mae Vong env., Thailand. Рис. 13–24. Переднеспинка: 13–14 — Lesticus nubilus, 2♂♂; 15 — L. attenuatus sp.n., паратип ♂; 16 — L. p. praestans, ♂ иЗ Нац. парка Кыкфыонг, Вьетнам; 17 — L. p. mouhotii, ♀ иЗ пров. Мондулкири, Камбоджа; 18 — L. auricollis, ♂ иЗ пров. БакЗЯн, Вьетнам; 19–20 — L. verticillatus sp.n., паратип ♂ иЗ нац. парка Сонгтхань и голотип ♂; 21 — L. bellus sp.n., голотип ♀; 22 — L. buqueti, ♀; 23 — L. lakhonus, ♀; 24 — L. laevis sp.n., ♂ голотип; 13, 22–23 — Нац. парк Катьен, Вьетнам; 14 — окр. Мае Вонг, Таиланд.

Figs 25–39. Aedeagus: 25–26 — Lesticus praestans mouhotii; 27–28– L. nubilus; 29–30, 38–39 — L. attenuatus sp.n., paratypes; 31– 32, 35 — L. auricollis; 33–34, 36 — L. bellus sp.n., paratype; 37 — L. verticillatus sp.n., paratype; 25–34 — median lobe with everted and inflated internal sac; 25, 27, 29, 31, 33 — caudal aspect; 26, 28, 30, 32, 34 — anterodorsal aspect; 35–39 — right paramere, left aspect; a, b, bb, c, cd, d, e, ed, ev, f — bulbs of internal sac. Scale bars 2 mm (25–34) or 1 mm (35–39). Рис. 25–39. Эдеагус: 25–26 — Lesticus praestans mouhotii; 27–28– L. nubilus; 29–30, 38–39 — L. attenuatus sp.n., паратипы; 31– 32, 35 — L. auricollis; 33–34, 36 — L. bellus sp.n., паратип; 37 — L. verticillatus sp.n., паратип; 25–34 — среднЯЯ долЯ с вывернутым и надутым внутренним меШком; 25, 27, 29, 31, 33 — каудально; 26, 28, 30, 32, 34 — антеродорЗально; 35–39 — праваЯ парамера, слева; a, b, bb, c, cd, d, e, ed, ev, f — пуЗыри внутреннего меШка. МасШтаб: 2 мм (25–34) или 1 мм (35–39).