Lesticus, FROM

Fedorenko, D. N., 2022, New or little-known Lesticus Dejean, 1828 (Coleoptera: Carabidae: Pterostichini) from Vietnam, Russian Entomological Journal 31 (3), pp. 260-275 : 264-265

KEY TO SPECIES GROUPS OF LESTICUS FROM VIETNAM:

1(2) Lateral ridge of mesoventrite with a small precoxal tooth. Body large, BL mostly over 23 mm. Labial palpomere 3 broadly triangular, about as wide at apex as long at inner margin in male, less so in female. Apical orifice of aedeagus with lateral ligules moderately sclerotized, left short, right moderately long and invisible in caudal (apical) view; internal sac curved to the left, with bulbs multiple and well differentiated ( Figs 25–34 ). Metepisternum long or short ........................... the auricollis -group

2(1) Lateral ridge of mesoventrite even, with no precoxal tooth. Body generally smaller. Apical orifice of aedeagus with left ligule vague to totally reduced and right ligule overdeveloped, very long and strongly sclerotized, wellvisible in caudal view; internal sac dorsal and more or less convoluted.

3(4) Labial palpomere 3 broadly triangular, 3/4–4/5 as wide as long in male, less so in female. Metatarsal anterolateral carina blunt. Body medium-sized, BL 19–22 mm. Metepisternum long. Internal sac indistinctly convoluted, with many larger bulbs. ( Figs 40–41 ) ............................ .................................................. the chalcothorax -group

4(3) Labial palpomere 3 slightly triangular, 1/2–3/5 as wide as long in male, subtriangular, less than half as wide as long in female. Metatarsal anterolateral carina sharp. Body generally larger, BL 22–28 mm. Metepisternum long or short. Internal sac tubiform, slightly yet distinctly convoluted, with a few smaller bulbs. ( Figs 42–45 ) ............... .......................................................... the insignis -group

Figures

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).

Figs 40–45. Aedeagus, median lobe with everted and inflated internal sac: 40–41 — Lesticus buqueti, ♂♂ from Java (40) or Vietnam (41); 42–43 — L. lakhonus; 44–45 — L. laevis sp.n., holotype; 40–41, 43, 45 — right dorsolateral aspect; 42, 44 — left ventrolateral aspect; b, c, d, e — bulbs of internal sac. Scale bars 1 mm. Рис. 40–45. Эдеагус, среднЯЯ долЯ с вывернутым и надутым внутренним меШком: 40–41 — Lesticus buqueti, ♂♂ с Явы (40) и иЗ Вьетнама (41); 42–43 — L. lakhonus; 44–45 — L. laevis sp.n., голотип; 40–41, 43, 45 — справа и сверху; 42, 44 — слева и сниЗу; b, c, d, e — пуЗыри внутреннего меШка. МасШтаб: 1 мм.