Two new genera of black flies(Diptera: Simuliidae) of Korea

다국어 초록 (Multilingual Abstract)

Larva and pupae of Prosimulium kiotoense and larvae of Twinnia japonensis were collected and reported from Korea for the first time. The genus Prosimulium, previously unknown from Korea, contains 80 species worldwide and 8 species are known in Japan. Species are separated into 3 species groups; hirtipes species-group (47 spp.), macropyga species-group (14 spp.) and magnum species-group (19 spp.), with which P. kiotoense belongs to the hirtipes species-group. The genus Twinnia, also previously unknown from Korea, contains only 10 species worldwide. In this study, I provide detailed descriptions and photographs of larvae and pupae P. kiotoense and larvae T. japonensis. Prosimulium kiotoense is characterized by pupa with gill of 16 filaments, cocoon amorphous and entirely covers the pupal body, head and thorax densely covered with microtubercles, larva with postgenal cleft apically straight, and hypostomal teeth with median tooth prominent. On the other hand, larva of T. japonensis can be characterized by labral fan absent, gill histoblast with 16 filaments, and hypostomal teeth with median tooth distinctly shorter than other teeth. In addition to descriptions for each species, a key to Korean Prosimulium and Twinnia is provided, with reference to the Japanese species and habitat information.