Lobrathium kuanicum, Assing, 2010

Assing, Volker, 2010, On the Lathrobiina of Taiwan (Coleoptera: Staphylinidae: Paederinae), Beiträge Zur Entomologie = Contributions to Entomology 60 (2), pp. 301-361 : 356-357

Lobrathium kuanicum sp. n. ( Figs 228-234 )

Type material:

Holotype ♂: " Taiwan, Kaohsiung Hsien, Kuanshan trail above Kaunshanchi Riv., 2650 m, 21.IV.92, A. Smetana [ T95 ] / Holotypus ♂ Lobrathium kuanicum sp. n., det. V. Assing 2010" (cAss) . Paratype: 1 ♀: same data as holotype (cSme) .

Description:

Body length: 7.5-8.5 mm. Habitus as in Fig. 228 . External characters as in L. spoliatum , except

for the somewhat larger eyes, their length approximately half the distance from posterior margin of eyes to posterior constriction in dorsal view ( Fig. 229 ).

♂: posterior margin of tergite VIII weakly angled in the middle; sternite VII not depressed in the middle, posterior margin almost truncate; sternite VIII with impression of somewhat oblong triangular shape, this impression with very sparse setae, without clusters of peg-setae, posterior excision shallowly concave ( Fig. 230 ); aedeagus of characteristic morphology, apical lobes slender and subapically hooked ( Figs 231-232 ).

♀: posterior margin of tergite VIII strongly and convexly produced in the middle ( Fig. 233 ); sternite VIII not oblong, posterior margin broadly convex, in the middle truncate; lateral sclerites of tergite IX very narrowly separated anteriorly; tergite X obtuse anteriorly, rather slender and acute apically ( Fig. 234 ).

Comparative notes:

From other representatives of the L. stimulansstimulans group, L. kuanicum is readily separated by the morphology and chaetotaxy of the male sternite VIII, the conspicuous shape of the aedeagus, as well as by the shape of the female tergite VIII.

Etymology:

The specific epithet (adjective) is derived from the name of the mountain range where the species is probably endemic.

Distribution and natural history:

The type locality is situated in the Kuanshan, Kaohsiung Hsien, southern Taiwan, at an altitude of 2650 m. The specimens were sifted from moss on large rocks and fallen trees in a primary coniferous forest (mostly fir) with bamboo undergrowth .

Figures

Figs 228-233: Lobrathium kuanicum sp. n.: habitus (228); forebody (229); male sternite VIII (230); aedeagus in lateral and in ventral view (231-232); female tergite VIII (233). Scale bars: 228-229: 1.0 mm; 230-233: 0.5 mm.

Figs 234-243: Lobrathium kuanicum sp. n. (234) and L. coalitum sp. n. (235-243): female tergites IX-X (234, 243); habitus (235); forebody (236); male sternite VIII (237); aedeagus in lateral and in ventral view (238-239); apex of aedeagus in ventral view (240); female tergite VIII (241); female sternite VIII (242). Scale bars: 235-236: 1.0 mm; 234, 237-243: 0.5 mm.