Sporadothrix Hermann, 1907 stat. rev.
Sporadothrix: Hermann 1907:8 [1908: 165].
Type species: Sporadothrix gracilis Hermann, 1907, by original designation; Hull 1962:347; Oldroyd 1974: 81–82 (fig. 77 entire ♀ [not congeneric]); Londt 1994: 76.
Londt (1994: 76), after studying the holotype of S. gracilis, and noting its obvious similarity to Acnephalum cylindricum Oldroyd, 1974, synonymised Sporadothrix with Acnephalum . Now that a revision of Acnephalum (as Acnephalomyia) has been completed, I have come to a different conclusion. Not only is gracilis similar to cylindricum, I now believe them to be conspecific. As the older name takes precedence, cylindricum must fall as a synonym of gracilis . In addition, this species shows a number of marked differences when compared to all other species previously placed in Acnephalum and so I reverse my 1994 decision and here reinstate Sporadothrix, which, as a result of the synonymy of cylindricum, remains monotypic.
Some of the characteristics considered diagnostic, and supporting the separation of Sporadothrix from Acnephalomyia are listed in Table 2.