Orthogonius wrasei, Tian, Mingyi & Deuve, Thierry, 2016

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 : 109-111

Taxon classification Animalia Coleoptera Carabidae

Orthogonius wrasei sp. n. Figs 3g, 13, 23, 42-43

Holotype.

Male, "Myanmar (Magway State), nr. Kyeto Pass between Padaukaing-Ngabyin, 850 m, 21.88911 N / 094.41589 E, (secondary forest, lux), 30. VI. 2005, leg. M. Hoffmann & T. Ihle", "Coll. Wrase BERLIN", in CDW.

Paratypes.

5 females, ibid. in CDW, MNHN and SCAU.

Diagnosis.

A black (including lateral expanded pronotal margins) and stout species, having nearly rectangular inner apical angles of elytra, an edentate mentum, a well bordered prosernal process and setose midcoxae.

Description.

Length: 18.5-19.0 mm; width: 6.5 mm. Habitus as in Fig. 13.

Body elongate, smooth and shiny. Body black, except palps dark brown. Head and pronotum impunctate, elytral odd intervals with small and sparse punctures; head and pronotum obscurely striate. Microsculptural engraved meshes isodiametric on head and elytra, transverse on pronotum.

Head longer than wide, HL/HW = 1.11-1.13, eyes rather small but prominent, frons and vertex convex, frontal impressions deep, extending beyond level of the fore supraorbital setae; clypeus bisetose, surface almost even; labrum sex-setose, slightly emarginate at apical margin; palps slender, subcylindrical, the 3rd maxillary palpomere as long as the 4th which glabrous, the 3rd with two short setae at apex; the 2nd labial palpomere slightly longer than the 3rd, bisetose on inner margin, with several additional setae, the 3rd labial palpomere with a few setae at basal part; ligula small, bisetose at apex; mentum without distinct tooth; each of mentum and submentum bisetose, palpiger asetose. Antennae moderately long, extending over base of elytra; pubescent from basal two fifth of the 4th antennomere, slightly expanded at pubescent portion; the 3rd almost as long as the 4th.

Pronotum strongly transverse, PW/PL = 1.76-1.77, disc moderately convex, apical and basal margins well beaded, sides strongly expanded, widest at middle; lateral expanded margins well defined, flat and not reflexed, surface somewhat striate; fore and hind angles broadly rounded; both transversal impressions well marked, basal foveae small and deep.

Elytra elongate ovate, EL/EW = 1.66-1.68, widest at about middle, parallel-sided at middle, basal border complete, apex broadly and obliquely truncated, inner angle nearly rectangular (Fig. 23); striae deep, intervals strongly convex, subequal in width at middle, the 3rd interval with three setiferous pores.

Legs rather slender, fore tibiae slightly expanded at apex, apical margin sinuate, outer angle distinctly protrude, outer margin sub-serrate; middle coxae setose, hind ones smooth and glabrous; middle tibiae quite straight, slightly expanded at apex; hind tibiae slightly expanded at apex, apical spurs long and sharp, the 3rd hind tarsomere longer than the 4th which deeply emarginate at apex (lobes one third as long as the segment); claws strongly pectinate.

Prosternal process well bordered at apex. Ventrite VII quadrisetose in both male and female;

Male genitalia (Figs 42-43): Stout and robust, shallowly sinuate ventrally, dorsal opening very wide, gently and gradually narrowed towards apex, which blunt in lateral view; apical lamella very short, and very sharp in ventral view.

Remarks.

Recognized by its black body and nearly rectangular inner apical angles of elytra.

Etymology.

This new species is named in honor of David W. Wrase (Berlin).

Distribution.

Myanmar.