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 : 266-268

2. Lesticus nubilus Tschitschérine, 1900

Figs 1–2 , 13–14 , 27–28 .

Tschitschérine, 1900: 173 (‘Cochinchine’); Csiki, 1929: 521; Roux et al., 2016: 328. — mouhoti : Bates, 1892: 356 (non mouhotii Chaudoir, 1868 ); Andrewes, 1926: 255; Csiki, 1929: 521; Roux et al., 2016: 328.

MATERIAL. 3♂♂, 3♀♀, ( SIEE), Vietnam, Dong Nai Province, Cat Tien National Park, at light HQL 450, 18.V–18.VI.2005 (D. Fedorenko); ♂ ♀ ( MPSU), southern Song Be Prov., ca 60 km N of Ho Chi Minh, env Phu Giao vill., 3–13.X.1994 (A. Napolov, D. Volkov); ♂ ( SIEE), Laos, 17 km N of Ventiane, Vang Vieng , 11– 27.IX. 2017 (V. Ustinov); ♂ ( ZIN), ‘ Phontioa , Laos, I. 55’; ♂ ( SIEE), Thailand, Prov. Nakhon Savan, 13 km N of Mae Wong vill., 15°54´N 99°33.3´44´´E, h~ 110 m, at light, 10.VIII.2009 (V. Zinchenko); ♀ ( SIEE), near Chiang Mai, VIII.2005 (A. Sokolov); ♀ , Phang Nga Prov., Chao Lang lake , 3.XI.2016 (E. Shankhiza); ♀ ( ZIN), Surat Thani Prov., Khao Sok NP, secondary forest, 7.XI.2010 (D.A. Gapon). — Internal sac of aedeagus examined in six males .

DIAGNOSIS. Body macropterous and large, metepisternum long. Protarsomere 1 with a rudimentary ventral pad in female (Fig. 54). Internal sac of aedeagus ( Figs 27–28 ) as for L. praestans except as follows: bulbs c and d widely separat- ed; b simple tubiform, without additional basal vesicle on right side.

REDESCRIPTION. BL 25.4–30 mm. Mesofemur with 3–4 anteroventral setae.

GEOGRAPHIC DISTRIBUTION. Vietnam, Laos, Thailand; supposedly throughout Indochina.

HABITATS AND HABITS. No data, except that all the specimens from the Cat Tien National Park were taken at light positioned at the edge of a monsoon broad-leaved forest not far from the bank of the Dong Nai River.

COMMENTS. No constant differences, except for rather slight ones in shape of endophallus, have been found to discriminate between L. nubilus and L. praestans mouhotii from different localities. But the adults from sympatric populations of these two species are more different, which is especially true of southern Vietnam, the type locality of L. nubilus . In particular, specimens of L. nubilus are darker in colour than those of L. praestans mouhotii from there, the forebody contrasts with the elytra but a little, the basal foveae of the pronotum are densely punctate and rugulose, and all females have protarsomere 1 with rudimentary ventral pad. This argues that the two species do exist in nature.

Tschitschérine [1900] supposed that L. nubilus might be identical to the species from Bhamo, Burma, misidentified as L. mouhotii ( ‘ mouhoti ’) by Bates [1892], but Andrewes [1926] then doubted their identity. Roux et al. [2016] demonstrated that the holotype of L. nubilus was female, instead of male, as Tschitschérine wrongly believed, while they wrongly named the holotype lectotype and recognized L. mouhoti Bates as ‘new synonym’, even though Csiki [1929] had listed it as a junior synonym of L. nubilus .

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).