Grichanov I.Ya. 2023. Irwinus, a new genus of long-legged flies from South Africa (Diptera: Dolichopodidae: Sympycninae) // Russian Entomol. J. Vol.32. No.1: 83–88 [in English].
All-Russian Institute of Plant Protection, Podbelskiy roadway, 3, St. Petersburg, Pushkin 196608 Russia. E-mail: grichanov@mail.ru
doi: 10.15298/rusentj.32.1.10
ABSTRACT: The genus Irwinus Grichanov, gen.n. is described from South Africa, including one new species, Irwinus irwini Grichanov, sp.n. The new genus is believed to be most closely related to the genus Campsicnemus Haliday in Walker, 1851 in the subfamily Sympycninae, having also some similarity with sympycnine genera Nurteria Dyte et Smith, 1980, and Tetrachaetus Bickel et Dyte, 1989. The new genus differs from other similar genera in such peculiar characters as narrow maculated wing, body with only white setae, almost parallel-sided face with fronto-clypeal suture distinct laterally, broad and strongly flattened dorso-ventrally abdomen in both sexes, concealed male hypopygium with dorso-lateral epandrial foramen. Coastal habitat of the new species is briefly discussed.
KEY WORDS: Diptera, Dolichopodidae, new genus, new species, South Africa, coastal habitat.