Stenus pervilis nov.sp. (Figs 8, 31, 58)

Type material: Holotype () and 13, 4 - paratypes: Taiwan: Nantou Hsien: Nankaoshan trail, Yuenhai Hut, 2350m, 4.V.1992, A. Smetana (T 112). Paratypes: 38, 21: ibidem, 2000-2150m, 8.V.1992, idem (T 120).- HT and PTT in coll. Smetana (Ottawa), PTT also in cT and in cP.

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

Length: 2.4-3.0mm (forebody: 1.3-1.4mm).

PM of the HT: HW: 27.5; DE: 14.5; PW: 20.3; PL: 21; EW: 25.5; EL: 20.5; SL: 16.

Male: Ventral characters as in S. persubtilis . Aedeagus (fig. 31), apical portion of median lobe triangularly pointed, expulsion hooks connected medially; parameres with 8-9 apical setae.

Female: Sternite 8 and Valvifer as in the compared species. Spermatheca (fig. 58), about as in S. persubtilis .

In nearly all respects extremely similar to S. persubtilis, only the punctation on tergite7 is slightly finer and less dense, interstices often as large as punctures.

Comparative notes: This new species is clearly distinct from S. persubtilis by the aedeagus.

Etymology: Since this species is so closely resembling S. persubtilis I name it " pervilis " (Lat.= very cheap).