Orthogonius himalayicus Tian & Deuve, 2005

Tian, Mingyi & Deuve, Thierry, 2016, Definition of the jianfengling species group of the ground beetle genus Orthogonius MacLeay (Coleoptera, Carabidae, Orthogoniini), ZooKeys 615, pp. 95-117 : 100

Taxon classification Animalia Coleoptera Carabidae

Orthogonius himalayicus Tian & Deuve, 2005 Figs 3i, 5, 15, 24-25

Orthogonius himalayicus Tian & Deuve, 2005: 61.

Length.

19.0-20.0 mm; width: 6.5-7.0 mm (measurements in the original description were not correct). Habitus as in Fig. 5.

Description.

Head and pronotum black, antennae and elytra dark brown, slender and very shinny; body smooth and glabrous, head and pronotum impunctate, elytral odd intervals with a few, sparse punctures which are irregularly arranged; head intricately wrinkled; microsculptural engraved meshes densely isodiametric, faint on head and pronotum, clear on elytra. Head slightly longer than wide, HL/HW = 1.15-1.18; labrum deeply emarginate at front; eyes comparatively small, but prominent; mentum edentate and bisetose, submentum bisetose. Pronotum transverse, PW/PL = 1.91-1.94, rather flat, lateral expanded margin wide and slightly reflexed, widest at middle. Elytra elongate and rather slender, EL/EW = 1.74-1.77, parallel-sided at middle, moderately convex, widest slightly behind middle, apex obliquely truncate, inner angles roundly obtuse (Fig. 15); striae very deep, intervals distinctly convex, the 3rd intervals generally with three setiferous pores. Legs moderately long, middle coxae setose, the 3rd and 4th hind tarsomeres subequal in length, all tarsal claws weakly pectinate. Prosternal process unbordered at apex. Male genitalia (Figs 24-25) with the median lobe of aedeagus comparatively small and short, middle portion convex, apex pointed in lateral view, turning to right, obtuse dorsally.

Remarks.

Differs from other congeners by its deeply concaved labrum and broadly obtuse inner apex of elytron.

Material examined.

1 male, the holotype: "British Bootang, L. Durel, 1898", in MNHN; 2 males, paratypes, "Pedong, A. Desgodins"; 1 male and 2 females, paratypes, "British Bootang, Maria Basti. L. Durel"; 1 male, a paratype: “Sikkim” only; 1 female, a paratype: " Museum Paris, Bhutan. R. Oberthür, 1900", all in MNHN, except one male in SCAU.

Distribution.

Bhutan and Sikkim (Fig. 3i).