Cryptochironomus tamayoroi A review of the Japanese Cryptochironomus Kieffer, 1918 (Diptera, Chironomidae) Yan, Chuncai Liu, Ting Cao, Wei Zhao, Guangjun Liu, Wenbin ZooKeys 2018 771 139 155 ZWGX Sasa & Ichimori, 1983 Sasa & Ichimori 1983 Insecta Chironomidae Cryptochironomus CoL Animalia Cryptochironomus tamayoroi Diptera 6 145 Arthropoda species tamayoroi   Cryptochironomus tamayoroiSasa & Ichimori, 1983: 102; Sasa and Kawai 1987: 61  Material examined. Japan. Holotype, ♂ (No. 74: 01), Tama River, at the Yoroi Bridge, at Yoroi-bashi, Japan. 11. iii. 1982.  Diagnostic characters. AR 2.56. Frontal tubercles present; tergite IX bearing three setae, posterior margin tapering. Anal point parallel-sided. Anal tergite bands "V"-shaped. Superior volsella about twice as long as wide, with four long setae; inferior volsella extending well beyond posterior margin of superior volsella. Gonostylus wider at base and tapering towards apex, with one single apical seta.  Distribution. Japan.