Stenus permolestus nov.sp. (Figs 40, 70)

Type material: Holotype () and 18, 6 - paratypes: Taiwan: Nantou Hsien: Nankaoshan, 1.5 km SW Tenchi Hut, 2830m, 6.V.1992, A. Smetana (T 116) . Paratypes: 1: Nankaoshan, 2.5 km SW Tenchi Hut, 2710m, 6.V.1992, idem (T 115) ; 2, 1: Tenchi Hut, 2830m, 6.V.1992, idem (T 119) ; 2, 1: Nankaoshan trail, 2060-2150m, 8.V.1992, idem (T 120) ; 20, 17: Houhuanshan, Kuenyang, 3050m, 27.IV.1990, idem (T 29).- HT and PTT in coll. Smetana (Ottawa), PTT also in cN, cT and in cP .

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

Length: 2.8-3.4mm (forebody: 1.5-1.6mm).

PM of the HT: HW: 30.8; DE: 16.5; PW: 22.5; PL: 23; EW: 28.5; EL: 24; SL: 19.

Male: Metasternum shallowly impressed, moderately coarsely, densely punctate, interstices smaller than half diameter of punctures. Anterior sternites simple, sternite 7 in posterior middle finer and denser punctate than laterally. Sternite 8 with a very shallow, broad apical emargination (LS: ED= 51:1.5). Sternite 9 with comparatively short, blackish apicolateral teeth. Aedeagus (fig. 40), apical portion of median lobe triangularly narrowed, apex rounded, expulsion hooks connected medially; parameres langer than median lobe, with 9-12 apical setae.

Female: Sternite 8 at posterior margin slightly projecting, rounded apically. Valviver with a short apicolateral tooth. Spermatheca (fig. 70), infundibulum slender, 3x as long as broad.

Median portion of frons strongly elevated, distinctly exceeding beyond the level of medial eye margins; pronotum and elytra with deep impressions, punctation of pronotum strongly, but only shortly, confluent, punctation of pronotum and elytra coarser than in S. persubtilis, diameter of elytral punctures slightly larger than apical cross section of antennal segment 2; abdominal punctation dense, interstices on tergite 7 distinctly smaller than punctures.

Comparative note: This new species has to be identified by examining the sexual characters.

Etymology: Since the identification of this new species is very difficult, I name it " permolestus " (Lat.= very vexatious).