Stenus mysterialis PUTHZ 1984

Stenus mysterialis PUTHZ 1984: 111 .

Material: Chiayi Hsien: 2: Alishan, 2300m, 8.IV.1965, Y. Hirashima, 26.VII.1982, Y. Shibata (Univ. Kyoto; cSh); 1: Alishan, Sister Ponds, 2180m, 26.IV.1990, A. Smetana (T 24) (coll. Smetana) ; 2: Fenchihu, 1500m, 2.-3.VII.1982, N. Nishikawa (cN, cP) ; 2, 3: near Tadongshan, 1800m, 11.VII.1978, 14.VIII.1983, Y. Shibata (cSh, cP) .

Descriptional notes: This species has been described from 2 females. From the new material the male sexual characters are described here:

Male: Metasternum flat, coarsely and densely punctate, interstices mostly smaller than half diameter of punctures, very shallowly reticulate. Sternite 3 simple, sternite 4 with a broad median impression in posterior half, which is coarsely and very densely punctate, sternite 5 and 6 each with a very broad and very deep median impression, of which the sides are strongly elevated posteriad, punctation and pubescence extremely fine and extremely dense, posterior margin broadly emarginate, sternite 7 anteriorly deeply, posteriorly shallowly impressed, punctation about as on previous sternites. Sternite 8 with narrow triangular excision in about posterior third. Sternite 9 with a long apicolateral tooth. Tergite 10 very broadly rounded at apical margin. Aedeagus (fig. 23), median lobe triangularly narrowed, apex narrowly rounded, expulsion hooks contiguous anteriorly; parameres slender with about 18-19 setae in apical third.

Female: Spermatheca (fig. 49).