Stilicoderus wrasei ASSING, 2013

Assing, Volker, 2015, On Stilicoderus and Stiliderus IV. Two new species from China and additional records (Coleoptera: Staphylinidae: Paederinae), Linzer biologische Beiträge 47 (1), pp. 145-161 : 152-153

Stilicoderus wrasei ASSING, 2013 ( Figs 9-14 , Map 3 )

M a t e r i a l e x a m i n e d: China: 13 [slightly teneral], Yunnan, mountain WNW Wuding , 25°39'N, 102°07'E, 2390 m, mixed forest margin with alder and pine, litter sifted, 18.VIII.2014, leg. Assing (cAss) ; 13, 2♀♀ [1♀ teneral], same data, but 1.IX.2014 (cAss) ; 1033, 8♀♀ [partly teneral], Yunnan, mountain W Xundian, 25°35'N, 103°09'E, 2300 m, mixed forest with alder, pine, shrub undergrowth, litter, twigs, and roots of herbs sifted, 16.VIII.2014, leg. Assing & Schülke (cAss, cSch) .

C o m m e n t: Stilicoderus wrasei was previously recorded only from the Xue Shan near Lincang in Lincang Prefecture, western Yunnan ( ASSING 2013a). The above records considerably expand the known distribution towards the east.

The above material is distinguished from the holotype by a slightly larger aedeagus with a less strongly bent ventral process (lateral view) and larger apical spines ( Figs 9-11 ). Moreover, the male sternite VIII is slightly longer and of slightly different shape ( Figs 12-14 ). Remarkably, there are even differences between the males from the environs of Wuding and those from the locality near Xundian ( Figs 10-11, 13-14 ). On the other hand, no significant variation was observed in the males from one and the same locality. More material from other localities is required to clarify if the observed differences are an expression of intra- or interspecific variation. In the meantime they are interpreted as intraspecific variation.

The currently known distribution is illustrated in Map 3 .

Figures

Map 3: Distributions of Stilicoderus wrasei (filled circles) and S. schuelkei (open circles) in Yunnan.

Figs 6-14: Stilicoderus hainanus nov.sp. (6-8) and S. wrasei ASSING (9-14; 9, 12: holotype; 10, 13: Xundian env.; 11, 14: Wuding env.): (6) median portion of head; (7) median portion of pronotum; (8) left elytron; (9-11) aedeagus in lateral view; (12-14) male sternite VIII. Scale bars: 9-15: 0.5 mm; 6-8: 0.2 mm.