Stenus perscitus nov.sp. (Figs 43, 73)

Type material: Holotype () and 8, 10 - paratypes: Taiwan: Chiayi Hsien: Yushan National Park, Mun-Li Cliff, 2700m, 27.IV.1990, A. Smetana (T 28) . Paratypes: 2: ibidem, 13.V.1991, idem (T 79); 1: Fenchihu, 2400m, 6.VIII.1976, Y. Shibata ; 1: ibidem, 13.VIII.1983, idem; 1: Nantou Hsien: Piluchi, 18.VII.1988, S. Nomura ; 1: near Tungfu, 2600m, 17.VIII.1973, S. Nakamura. - HT and PTT in coll. Smetana (Ottawa), PTT also in coll. Naomi, cSh and in cP .

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

Length: 2.7-3.1mm (forebody: 1.5mm).

PM of the HT: HW: 28.8; DE: 15; PW: 21; PL: 21.5; EW: 26; EL: 22.5; SL: 17.

Male: Metasternum moderately shallowly impressed, coarsely and densely punctate, interstices smaller than half diameter of punctures. Anterior sternites simple. Sternite 7 finely and densely punctate posteromedially. Sternite 8 with a moderately narrow, shallow apical emargination (LS: ED= 49:3).Sternite 9 with moderately long, light apicolateral teeth. Aedeagus (fig. 43), resembling very much that of S. pertenuis nov sp., but the apical portion of median lobe different, the expulsion hooks contiguous, the parameres shorter, with about 6 apical setae.

Female: Sternite 8 at posterior margin obtusely angled triangular, apex narrowly rounded. Valvifer with a moderately long, light apicolateral tooth. Spermatheca (fig. 73) with a long and narrow infundibulum.

Comparative note: Also this species should be identified by the sexual characters.

Etymology: Since this species is small and delicate I name it " perscitus " (Lat.= very delicate).