Taxonomic Study of the Genus Psila MEIGEN (Diptera, Psilidae) from Japan, Sakhalin and the Kurile Islands

Seventeen species of the genus Psila MEIGEN from Japan, Sakhalin and the Kurile Islands are reviewed. Of these, seven species, namely P. (Psila) fulviseta, P. (P.) japonica, P. (Synaphopsila) pullata, P. (Freyopsila) kanmiyai, P. (F.) nigriseta, P. (F.) nitida, P. (F.) sanguinolenta, are new to science. Nine species including two economically important pests, P. (P.) rosae FABRICIUS and P. (P.) nigricornis MEIGEN, are newly recorded in Japan. A key to the Japanese species is also presented.