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.