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Abstract
Three new Laboulbeniales occurring on Brazilian Diptera are described. These are Stigmatomyces cearensis, parasitic on Guttipsilopa (Nesopsilopa) stonei (Mathis & Wirth) (Ephydridae); Stigmatmyces gratiellae, parasitic on Cressonomyia meridionalis (Cresson) (Ephydridae); and Stigmatomyces litoralis, parasitic on Glenanthe caribea Mathis and Paraglenanthe bahamensis Wirth (both Ephydridae). Fifteen other dipterophilous Laboulbeniales are reported for the first time from Brazil. The synonomy between Stigmatomyces notiphilae Thaxt. and S. leucophengae Thaxt. also is proposed.
The authors are indebted to C.J. Barros de Carvalho (Brazil), P. Clausen (U.S.A.), J. Deeming (G.B.), and G. Raffone (Italy) for identification of host insects. The authors also wish to thank C. Spagnolli for his kind assistance during the collecting trips to Brazil.