Winthemiini is a worldwide tribe in the subfamily Exoristinae (Diptera: Tachinidae) with 200 species in 16 genera. We confirm the monophyly of Winthemiini and examine relationships among the constituent genera based on a parsimonious analysis of adult morphological characters for 53 species representing 12 out of 16 currently recognized Winthemiini genera. As a result, Winthemiini is divided into three major clades, with relationships as follows: ((Rhaphiochaeta [Ossidingia, Nemorilla]) ((Hemisturmia [Avibrissosturmia, Triodontopyga]) ([Smidtia, Winthemia])). A revised classification system for Winthemiini is proposed, recognizing 12 genera. Four new synonymies are proposed – Diotrephes and Chesippus as junior synonyms of Smidtia, and Hemisturmiella and Parachetolyga as junior synonyms of Winthemia – along with four new combinations: Winthemia brasiliana (Guimarães) comb.n., W. metopia (Bischof) comb.n., Smidtia atriventris (Walker) comb.n., and S. notialis (Reinhard) comb.n.

ABSTRACT. In the state of Mato Grosso do Sul, which is composed by four macroregions, Cerrado, Chaco, Atlantic Forest and Pantanal, there are 39 species and 24 genera of Tachinidae based on the literature. The subfamily Tachininae, with 15 species occurring in the State, has the highest representativeness, while the other subfamilies, Exoristinae, Phasiinae, and Dexiinae, with respectively 14, 7 and 3 species.

Here we catalogue six species in four genera of Anthomyiidae (Anthomyia, Calythea, Delia, and Emmesomyia) from Colombia and provide geographical information for all species, when available.