Cryptochironomus albofasciatus (Staeger, 1839)

Chironomus albofasciatus Staeger 1839: 566.

Chironomus (Cryptochironomus) albofasciatus Staeger. Goetghebuer 1937-1954: 38.

Cryptochironomus albofasciatus (Staeger). Reiss 1968: 195; Pinder 1978: 116; Sasa and Kawai 1987: 16; Sasa 1988: 56; 1989: 76; 1990: 31; 1991: 84; Sasa and Okazawa 1991: 53; Sasa, Kitami and Suzuki 1999: 7; 2001: 5; Makarchenko et al. 2005: 408; Yan et al. 2016: 486-487.

Parachironomus inafegeus Sasa, Kitami & Suzuki, 2001: 6 (syn. n.).

Material examined.

China. ♂ (No. 05227) Fujian Province, Longyan City, Shanghang county, 3.v.1993, light trap, X. Wang. The type specimen of Parachironomus inafegeus Sasa, Kitami & Suzuki. Holotype, ♂ (No. 398: 65), on the shore of lake Inawashiro, insect net, 8.vi.2000.

Diagnostic characters.

Thorax yellowish brown with white stripes; anal point parallel-sided, slender; anal tergite bands “V” -shaped, not fused in the middle; superior volsella crescent-like; inferior volsella tuberculate with two small protuberances, bearing two strong apical setae, free of microtrichia.

Distribution.

China (Fujian Province); Russian Far East; Japan; Europe.

Remarks.

The holotype specimen of Parachironomus inafegeus Sasa, Kitami & Suzuki, 2001 mainly agrees with the description of Cryptochironomus albofasciatus (Staeger, 1839) by Goetghebuer (1937-195: 38, fig. 116), especially the characters of anal point, superior and inferior volsella, and gonostylus. Consequently, it must be considered a junior synonym of Cryptochironomus albofasciatus (Staeger, 1839). See also the species illustration in Yan et al. (2016: 487, fig 1.).