Taxonomic studies on the chironomid midges (Diptera, Chironomidae) collected from the Kurobe Municipal Sewage Treatment Plant

Abstract

Collections of chironomid midges were conducted during a one-year period from April 1997 to March 1998 at the Kurobe Municipal Sewage Treatment Plant (Kurobe Joka Center), for obtaining basic information on their bionomics and for developing their control methods. About 20,000 adult specimens were collected during daytime with insect nets or sucking tubes, as well as during night-time with light traps, and were separated into species under a stereomicroscope, and a part of them were individually mounted on slides for species identification. A total of 42 species were collected and identified, among which 8 are described as new species in this paper, together with one new genus, Kurobebrillia. They are Cryptochironomus jokaprimus, Pentapedilum jokasecundum, Micropsectra jokatertia, M. jokaquarta, Kurobebrillia jokaquinta, Eukiefferiella jokasexta, E. jokaseptima and Limnophyes jokaoctavus.