Abstract
Ten species of spiders of the family Gnaphosidae of Hokkaido, Japan, collected mainly from the Daisetsuzan Mountains, are reported. Of these, Drassyllus shaanxiensis PLATNICK et SONG, 1986, and D. sasakawai Kamura, 1987, are newly registered to the fauna of Hokkaido, and Micaria alpina L. KOCH, 1872, and Gnaphosa sticta KULCZYNSKI, 1908, are recorded from Japan for the first time. The female genitalia and the male pales of the latter two species are illustated on the basis of the Japanese materials. Micaria alpina are widely distributed in the northernmost part of the Holarctic regions, while Gnaphosa sticta is known only from northeastern Siberia and Hokkaido. The specimens of the spiders were collected by bait trapping.
