A review of the southern South American genus Gyretria enderlein (Diptera: Sphaeroceridae : Limosininae)

摘要

Gyretria melanogaster (Thomson) and Gyretria biseta (Duda), new combinations, are redescribed. The genus Gyretria Enderlein, previously treated as a synonym of Chaetopodella, is resurrected for these two species. Gyretria is redescribed and its relationships to other Limosininae discussed. The presence of eversible abdominal sacs, found in males of both Gyretria species, is noted for the first time in the Sphaeroceridae. A lectotype is designated for Leptocera (Chaetopodella) biseta Duda, and Sclerocoelus rectangularis (Malloch) is given as a new combination.