Stenus hseuhmontis, Puthz, 2012

Puthz, V., 2012, On the Stenus LATREILLE 1797 from Taiwan with non-spotted elytra (Coleoptera, Staphylinidae) (327 Contribution to the Knowledge of Steninae), Linzer biologische Beiträge 44 (2), pp. 1431-1475 : 1455-1456

Stenus hseuhmontis nov.sp. ( Figs 80, 82 )

Type material: Holotype () and 1 - paratype: Taiwan: Taichung Hsien: Hseuhshan, Hseuhshan Mountain Park , 3750-3884m, 9.V.1991, A. Smetana (T 74).- HT and PT in coll. Smetana (Ottawa).

Description: Micropterous, black, moderately shiny, forebody and anterior abdomen moderately coarsely, densely punctate, posterior punctation of abdomen moderately fine and moderately dense; pubescence short, recumbent. Segment 1 and base of segment 2 of maxillary palpi reddish yellow, remainder brown. Antennae dark brown. Legs dark brown, basal half of femora dark chestnut-brown. Clypeus and labrum blackish, moderately densely pubescent.

Length: 2.6-3.0mm (forebody: 1.4-1.5mm).

PM of the HT: HW: 28.5; DE: 17; PW: 22; PL: 20; EW: 27; EL: 23.5; SL: 18.

Male: Unknown.

Female: Sternite 8 (fig. 80). Valvifer seems to be acute apicolaterally but is rudimentarily slightly serrate. Spermatheca (fig. 82), infundibulum twice as long as broad.

In many respects close to S. houhanmontis nov.sp., but less densely reticulate and less coarsely, less densely punctate, elytral punctation as coarse as pronotal punctation, punctures distinctly delimited. Abdomen broader, paratergites also narrow but horizontal, no membranous fringe at posterior margin of tergite 7; interstices on tergite 7 larger than punctures.

Comparative notes From the close relatives S. rugipennis SHARP and S. suspectatus PUTHZ this new species may be easily distinguished by the smaller size, shorter, trapeziform elytra and the spermatheca, from S. kuanmontis nov.sp. by the trapeziform elytra, less dense pronotal punctation, horizontal paratergites and the missing apical membranous fringe at tergite 7.

Etymology: The name of this species is derived from the type locality.

Figures

Figs 78-82: Sternite 8 of females (78, 80), expulsion hooks of median lobe (79) and spermatheca (81, 82) of Stenus kuanmontis nov.sp. (78, 81, HT), S. houhanmontis nov.sp. (79, HT) and S. hseuhmontis nov.sp. (80, 82, HT).- Scale =0.1mm (78=79; 81=82).