Squamanitaceae and three new species of Squamanita parasitic on Amanita basidiomes

Abstract The systematic position of the enigmatically mycoparasitic genus Squamanita ( Agaricales , Basidiomycota ) together with Cystoderma Phaeolepiota Floccularia and Leucopholiota is largely unknown. Recently they were recognized as Squamanitaceae but previous studies used few DNA markers from a restricted sample taxa family lacked formal taxonomic treatment. In this study, newly generated sequences type S. schreieri several additional species family, phylogeny reinvestigated concatenated (18S-5.8S-nrLSU-RPB2-TEF1 - α) dataset. This study reveals that are monophyletic clade strong statistical support in Bayesian analysis form . nested within ; clustered two subclades; was present both Maximum Likelihood analyses. name formally emended detailed treatment presented to accommodate five genera. Meanwhile, another (18S-ITS-nrLSU-RPB2-TEF1 dataset investigate phylogenetic relationships delimitation Our data indicates “ umbonata ” Northern hemisphere forms complexes, one complex includes six specimens North America, Europe, East Asia, other Central America respectively. Futhermore, can parasitize Amanita besides fungal species. mira parasitizes A kitamagotake A. sect. Caesareae ), while orientalis sororcula parasites belonging sepiacea Validae ). Italy occurs on excelsa Three new viz. documented morphological, multi-gene phylogenetic, ecological data, along line drawings photographs, compared similar key for identification global provided.