Anomognathus serratus, Assing, 2011

Assing, V., 2011, Six new species and additional records of Aleocharinae from China (Coleoptera: Staphylinidae: Aleocharinae), Linzer biologische Beiträge 43 (1), pp. 291-310 : 306-309

Anomognathus serratus nov.sp. ( Figs 51-53 )

T y p e m a t e r i a l: Holotype: " China - Zhejiang Prov., Tianmu Shan, Tianmu village, 500 m, under pine bark, 26.VI.2008, leg. Huschke / Holotypus Anomognathus serratus sp. n. det. V. Assing 2010" (cAss). Paratypes: 1, 3: same data as holotype (cAss).

D e s c r i p t i o n: Body length 1.9-2.3 mm. Coloration: head blackish; pronotum bright reddish-yellow; elytra pale-brown, with an indistinct diagonal yellowish band extending from the humeral angles towards, but not always reaching, the sutural angles; abdomen reddish-yellow, with segments VI and anterior portion of VII infuscate; legs yellowish; antennae pale-brown, with antennomeres I-II or I-III yellowish.

Head 1.05-1.10 times as broad as long; lateral margins behind eyes converging posteriad; punctation rather dense and fine, barely visible in the pronounced microreticulation. Eyes large and bulging, approximately as long as postocular region in dorsal view. Antenna distinctly incrassate apically; antennomere III approximately as long as, but somewhat narrower than II, of conical shape, almost twice as long as broad; IV distinctly transverse; V-X of increasing width and increasingly transverse; X disc-shaped, more than twice as wide as long.

Pronotum approximately 1.3 times as broad as long and 1.1 times as wide as head, widest in anterior half; surface with pronounced microreticulation and almost matt; punctation fine, barely noticeable in the microsculpture.

Elytra 1.05-1.10 times as long as pronotum; humeral angles pronounced; surface with pronounced microreticulation and very fine, barely noticeable punctation. Hind wings fully developed.

Abdomen subparallel; tergites III-V with shallow anterior impressions; microsculpture distinct, but shallower than that of head and pronotum; tergal surfaces somewhat glossy; punctation sparse and very fine.

: posterior margin of tergite VIII with a long tooth-like process on either side, broadly truncate and with four short and apically truncate teeth, between the middle portion and the lateral processes emarginate and with long stout yellowish setae ( Fig. 52 ); sternite VIII with convex posterior margin; median lobe of aedeagus with ventral process almost angled in lateral view ( Fig. 51 ).

: posterior margin of tergite VIII truncate and weakly serrate, without lateral processes ( Fig. 53 ); sternite VIII of similar shape as in male; spermathecal capsule as in other species of the genus with large and somewhat oval distal portion and with short proximal portion.

E t y m o l o g y: The specific epithet (Latin, adjective: shape like a saw) refers to the distinctive shape of the posterior margin of tergite VIII in both sexes.

C o m p a r a t i v e n o t e s: The new species is distinguished from its congeners particularly by the morphology of the aedeagus and by the shape of the male tergite VIII. Regarding its coloration, A. serratus is similar to A. laetus CAMERON 1939 from North India. In A. laetus , the elytra are uniformly yellowish-brown and the margin between the lateral processes of the male tergite VIII is "either truncate or with two minute teeth close together at the middle" ( CAMERON 1939).

D i s t r i b u t i o n a n d n a t u r a l h i s t o r y: Thetypelocalityissituatedin Zhejiang province in northeastern China. The type specimens were collected under pine bark at an altitude of 500 m.

Figures

Figs 48-53: Anomogathus armatus (SHARP) (48-50; 49: lectotype; 48, 50: Zhejiang) and A. serratus nov.sp. (51-53): (48, 51) median lobe of aedeagus in lateral view; (49, 52) male tergite VIII; (50, 53) female tergite VIII. Scale bars: 0.1 mm.