Abstract
The author describes two new genera of fungi from the order Laboulbeniales: Tavaresiella gcn.n., similar to Symplectromyces Thaxter, with the type species T. hebri sp. n., and Triceromyces gen.n., related to Distolomyces Thaxler, with type species T. balazucii sp. n.; both are parasites of Hebrus spp. (Heteroptera). A new species on Sphaerosoma globosum (Coleoptera, Endomychidac), Euphoriomyces rossii sp.n. is also described, and the localities of seven other species new for Poland are presented.