Hoplocheiloma macropyga (Frey)

Marshall, S. A., 2011, A review of the genus Hoplocheiloma Cresson (Diptera: Micropezidae), Zootaxa 2806 (1), pp. 1-23 : 22

Hoplocheiloma macropyga (Frey)

Hennig treated Gymnosphen Frey , a monotypic genus erected for G. macropyga Frey , as a synonym of Hoplocheiloma because he considered the generic descriptions used by Frey for Gymnosphen and by Cresson for Hoplocheiloma to be the same. In fact, the only reliable diagnostic feature for the genus (the clypeal setae) is not mentioned in Frey’s description of Gymnosphen , and Hennig apparently did not see the type of Frey’s species. He provides neither diagnosis nor comments on the species, merely citing Frey and apparently including the species in his key to species on the basis of Frey’s description.

Gymnosphen macropyga was described on the basis of a unique specimen from Brazil, deposited in the Finnish Natural History Museum, Helsinki. Photographs of the holotype, kindly provided by Dr. G. Ståhls, show very clearly that the clypeus lacks setae. This species is provisionally moved to Calosphen pending review of the Rainieria / Calosphen group of genera.