Neosclerus inarmatus, Assing, 2011

Assing, Volker, 2011, A revision of the genus Neosclerus C (Coleoptera: Staphylinidae: Paederinae), Beiträge Zur Entomologie = Contributions to Entomology 6 (1), pp. 89-148 : 115-117

Neosclerus inarmatus sp. n. ( Figs 73-79)

Type material:

Holotype : " Taiwan - Hsinchu Co., Wufeng , Rd. 122, km 19, 1200 m, mountain forest litter, 26.III.2008, leg. Vít [12] / Holotypus  Neosclerus inarmatusinarmatus sp. n. det. V. Assing 2009" (cAss).

Description:

Body length 3.4 mm. Habitus as in Fig. 73. External morphology as in N .. configensconfigens (see below), except as follows:

Head with denser puntation; postocular region shorter, almost obsolete. Elytra slightly longer, approximately 0.75 times as long as pronotum ( Fig. 74).

: sternite VII with very weakly concave posterior margin, in posterior median portion with somewhat denser, but otherwise unmodified pubescence ( Fig. 75); sternite VIII with broadly V-shaped posterior excision, its depth approximately 1/6 the length of sternite, in anterior half with median elevation, this elevation without posterior spinose extension ( Figs 76-77); aedeagus of distinctive morphology, ventral process subapically weakly dentate in lateral view ( Figs 78-79).

Etymology:

The name (Latin, adjective: unarmed) refers to the absence of a posterior spinose extension of the

median elevation of the male sternite VIII, a character distinguishing N .. inarmatusinarmatus from other micropterous species known from Taiwan.

Comparative notes:

This species is distinguished from other micropterous congeners distributed in Taiwan by the denser punctation of the head, the practically obsolete postocular region, the longer elytra, the morphology of the aedeagus, and by the absence of an anterior carina with posterior process on the male sternite VIII.

Distribution and bionomics:

The type locality is situated in Hsinchu Hsien, northwestern Taiwan, where the holotype was sifted from mountain forest litter at an altitude of 1200 m in March .