Stenus permodestus, 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 : 1451

Stenus permodestus nov.sp. ( Figs 33 , 72 )

Type material: Holotype () and 5, 3 - paratypes: Taiwan: Nantou Hsien: Houhuanshan, Kuenyang , 3050m, 4.V.1991, A. Smetana (T 63) . Paratypes: 3, 5: ibidem, idem (T 64) ; 4, 3: ibidem, 13.V.1995, idem (T 179).- HT and PTT in coll. Smetana (Ottawa), PTT also in cN and in cP .

Description: About as in S. persubtilis nov.sp.

Length: 2.7-3.2mm (forebody: 1.4-1.6mm).

PM of the HT: HW: 30; DE; 16; PW: 22; PL: 22; EW: 26.5; EL: 23.5; SL: 18.

Male: Metasternum shallowly impressed, moderately coarsely and moderately densely punctate, interstices mostly larger than half diameter of punctures. Anterior sternites simple, sternite 7 finer and denser punctate and pubescent medially than laterally. Sternite 8 with a broad and shallow apical emargination (LS: ED= 51:3). Sternite 9 with comparatively short, blackish apicolateral teeth. Aedeagus (fig. 33), apex of median lobe pointed, expulsion clasp broad; parameres as long as median lobe, with 8-9 apical setae.

Female: Sternite 8 at posterior margin feebly and roundly projecting. Valvifer with a short apicolateral tooth. Spermatheca (fig. 72), infundibulum slender, about 3x as long as broad.

Median portion of frons distinctly exceeding the level of medial eye margins; pronotum and elytra with deep impressions; abdominal punctation dense, interstices on tergite 7 distinctly smaller than punctures.

Comparative notes: This new species may be distinguished from S. perversor nov.sp., which has been found in about the same area, by the shape of the spermatheca with a relatively slender infundibulum, and by the aedeagus with a more pointed median lobe, from all other close relatives also by the sexual characters.

Etymology: Since this species has no exceptional characters I name it " permodestus " (Lat.= very modest).

Figures

Figs 30-41: Ventral aspect of aedeagus (30-34, 37-41) outline of apical portion of aedeagus (35, 36) of Stenus persubtilis nov.sp. (30, T 146, PT), S. pervilis nov.sp. (31, T 12, PT), S. perversor nov.sp. (32, T 59, PT), S. permodestus nov.sp. (33, T 179, PT), S. perplicatus nov.sp. (34-36: Shouchia, PTT), S. persimplex nov.sp. (37, T 177, PT), S. perodiosus nov.sp. (38, T 85, PT), S. perrarus nov.sp. (39, T 5, PT), S. permolestus nov.sp. (40, T 119, PT), S. pertenuis nov.sp. (41, T 160, PT). – Scale bar = 0.1mm.

Figs 70-77: Spermathecae of PTT (70-75), elytra (76), semilateral aspect of abdominal segments 4- 7 (77) of Stenus permolestus nov.sp. (70, T 116), S. pertricosus nov.sp. (71, T 61), S. permodestus nov.sp. (72, T 64), S. perscitus nov.sp. (73, T 28), S. perfectus nov.sp. (74, T 19), S. pertenuis nov.sp. (75, T 161), S. nefas PUTHZ (76, 77, HT).