Revision of the Genus Prosimulium Roubaud (Diptera, Simuliidae) of Japan : I. hirtipes-group in the Subgenus Prosimulium

Abstract

In this paper, we presented a revision of Japanese black-flies belonging to the Prosimulium hirtipes-group with the description of a new species and the key to species occurring in Japan. After making procise examinations of the specimens belonging to the P. hirtipes-group of all stages collected from several localities of Japan, it was ascertained that the all of specimens, which have been regarded as P. hirtipes (Fries, 1824) since 1954,were distinctly separable from those of P. hirtipes s. str. from Northern Europe. The names P. kiotoense Shiraki 1935 and P. jezonicum (Matsumura, 1931), which had been adopted for Japanese specimens, were both resurrected basing on significant differences observed between specimens collected from Kyoto and those from Hokkaido.