A new marine chironomid species of the genus Tanytarsus (Diptera: Chironomidae) from Okinawa, Japan

Abstract

A new marine species of chironomid genus Tanytarsus van der Wulp, 1893, collected from the Iriomote Island (Okinawa Pref., Japan) is described and figured on the basis of adult male morphology. This species is closely related to T. maginihamatus Tokunaga, 1933 in the structure of hypopygium, but is easily distinguishable from the latter in having well developed anal point, large egg-shaped superior volsella and apically twisted median volsella.