Taxonomical notes on the chironomid midges of the tribe Chironomini collected from the Ryukyu Islands, Japan, with description of their immature stages

Abstract

The morphology of the chironomid pupae and larvae of the tribe Chironomini collected from the Ryukyu Islands, Japan, were studied. New species names are proposed for the four chironomids whose adults were described in the former report in 1983. The pupae and larvae of 8 species, i.e. Chironomus longilobus, Chironomus glauciventris, Chironomus javanus, Chironomus okinawanus sp.n., Chironomus samoensis, Chironomus crassiforceps, Dicrotendipes yaeyamanus sp.n. and Polypedilum miyakoense sp.n., and the pupae of 3 species, i.e. Dicrotendipes niveicaudus, Cryptochironomus hentonensis sp.n. and Cryptochironomus javae, are described and illustrated. Keys for pupae and larvae of Okinawan species of Chironomini are also provided.