抄録
The fauna and distribution of blackflies in Fukuoka Prefecture were studied based on the collections of larvae and pupae from streams at 51 localities in spring of 1990. A total of 5, 613 blackflies, [5, 047 larvae (89.9% in total number) and 566 pupae (10.1%)], were collected at 37 sites. All these blackflies were classified into seventeen species of the genus Simulium Latreille and Prosimulium Roubaud. Five species, Simulium (Nevermannia) aureohirtum, S. (N.) konoi, S. (N.) mie, S. (Gnus) malyschevi and S. (Simulium) quinquestriatum were newly recorded from Fukuoka Prefecture. The most abundant species was S. (N.) uchidai (29.7% in total number), followed by S. (Gn.) bidentatum (26.6%), S. (S.) japonicum (16.0%), S. (Gn.) nacojapi (9.8%) and S. (Odagmia) aokii (6.1%). The most widely distributed species was S. (N.) uchidai (29 sites), followed by S. (Gn.) bidentatum (18 sites), S. (S.) japonicum (17 sites), S. (S.) rufibasis (14 sites), S. (S.) arakawae (14 sites), S. (O.) aokii (11 sites) and S. (N.) subcostatum (10 sites).
