A new species of Simulium (Nevermannia) (Diptera:Simuliidae) from Japan

Abstract

A new black-fly species, Simulium (Nevermannia) uemotoi sp. nov., is described based on female, male, pupal and mature larval specimens collected from Oita, Japan. This new species is assigned to the vernum species-group and is distin-guished from other known related species by a combination of the following characters: katepisternum with several hairs on each side and 1st and 2nd segments of maxillary palp ocherous in both sexes of adults; frons with two long and one short trichomes on each side, gill with four slender thread-like filaments and simple wall-pocket-shaped cocoon in the pupa; and small, M-shaped or rounded postgenal cleft and simple rectal organ in the larva. A new name S. (TV.) onoi is given for the species which was collected from Hokkaido and erroneously identified as Cnetha konoi by Ono.