Trigonotoma ledouxi Dubault, Lassalle et Roux, 2010

Fedorenko, D. N., 2024, Notes on Trigonotoma and Pareuryaptus (Coleoptera: Carabidae: Pterostichini) from Vietnam, Russian Entomological Journal 33 (1), pp. 43-71 : 51

5. Trigonotoma ledouxi Dubault, Lassalle et Roux, 2010

Fig. 95 .

Dubault et al., 2010b: 124 (Tam Dao); Roux et al., 2016: 154.

MATERIAL. ♀ ( ZIN), Vietnam, Tam Dao , at night, 19.VIII.1985 (M. Savitsky) [in Russian] .

DIAGNOSIS. Distinctive from the other species of the lewisii -group by metepisterna short, about as long as wide, pronotal sides subconvex toward basal angles, basal foveae very shallow and impunctate, and body larger.

REDESCRIPTION.For recognition only.Body as in Fig.95 . Supposedly apterous. BL 21–24 mm. Pronotal microsculpture hardly traceable, consisting of moderately transverse meshes; elytral microsculpture consisting of dense transverse lines. Left mandible distinctly obliquely striated at base of dorsal side.

Mesotarsi without lateral sulci, metatarsomere 1 in basal half and metatarsomere 2 at extreme base with a nearly indistinc dorsolateral sulcus; metatarsomere 1 with four anterolateral setae and single posterolateral seta. Median lobe of aedeagus with apex rather long obtrapezoidal and curved to the right [ Dubault et al., 2010b: Pl. 9, Figs 2–3 ; Roux et al., 2016: 155].

GEOGRAPHIC DISTRIBUTION. Endemic to the Tam Dao mountain ridge, northern Vietnam.

HABITATS AND HABITS. No data.

Figures

Figs 93–95. Pareuryaptus and Trigonotoma: 93–94 — prothorax of P. glastenvalum (93) and P. c. luangphabangensis (94), right posteroventral aspect; 95 — T. ledouxi, ♀ from Tam Dao, dorsal habitus. Рис. 93–95. Pareuryaptus и Trigonotoma: 93–94 — переднегрудь P. glastenvalum (93) и P. c. luangphabangensis (94) вентрально, справа и сЗади; 95 — T. ledouxi, ♀ иЗ Tam Dao, габитус сверху.

Figs 1–6. Head and pronotum: 1 — Trigonotoma aurifera, ♂ from Seat Doi Saket, Thailand; 2 — T. nitidicollis, ♂ from Phong Nha - Kebang NP; 3 — T. perraudieri, ♂ from Wang Nuea, Thailand; 4–5 — T. chrysites, ♂♂ from Bat Dai Son NP; 6 — T. dohrnii, ♂ from Nho Quan env. Рис. 1–6. Голова и переднеспинка: 1 — Trigonotoma aurifera, ♂ иЗ Seat Doi Saket, Таиланд; 2 — T. nitidicollis, ♂ иЗ Нац. парка Phong Nha - Kebang; 3 — T. perraudieri, ♂ иЗ Wang Nuea, Таиланд; 4–5 — T. chrysites, ♂♂ иЗ Нац. парка Bat Dai Son; 6 — T. dohrnii, ♂ иЗ окр. Nho Quan.