The class Laboulbeniomycetes comprises biotrophic parasites associated with arthropods and fungi. Two orders are currently recognized, Pyxidiophorales and Laboulbeniales. Herpomyces is an isolated genus of Laboulbeniales, with species that exclusively parasitize cockroaches (Blattodea). Here, we evaluate 39 taxa of Laboulbeniomycetes with a three-locus phylogeny (nrSSU, ITS, nrLSU) and propose a new order in this class. Herpomycetales accommodates a single genus, Herpomyces, with currently 26 species, one of which is described here based on morphological and molecular data. Herpomyces shelfordellae is found on Shelfordella lateralis cockroaches from Hungary, Poland, and the USA. We also build on the six-locus dataset from the Ascomycota Tree of Life paper (Schoch and colleagues, 2009) to confirm that Laboulbeniomycetes and Sordariomycetes are sister classes, and we apply laboulbeniomyceta as a rankless taxon for the now well-resolved node that describes the most recent common ancestor of both classes.

Department of Molecular Biotechnology and Microbiology University of Debrecen Debrecen Hungary

Department of Molecular Phylogenetics and Evolution Faculty of Biology University of Warsaw Warsaw Poland

Department of Organismic and Evolutionary Biology Harvard University Cambridge MA USA

Department of Organismic and Evolutionary Biology Harvard University Cambridge MA USA; Faculty of Science University of South Bohemia České Budějovice Czech Republic; Department of Botany and Plant Pathology Purdue University West Lafayette IN USA

References provided by Crossref.org

New insights into the DNA extraction and PCR amplification of minute ascomycetes in the genus Laboulbenia (Pezizomycotina, Laboulbeniales)

The haustorium as a driving force for speciation in thallus-forming Laboulbeniomycetes

Hesperomyces (Fungi, Ascomycota) associated with Hyperaspis ladybirds (Coleoptera, Coccinellidae): Rethinking host specificity

Notes on Trochila (Ascomycota, Leotiomycetes), with new species and combinations

A parasitic coevolution since the Miocene revealed by phase-contrast synchrotron X-ray microtomography and the study of natural history collections

Checklist of thallus-forming Laboulbeniomycetes from Belgium and the Netherlands, including Hesperomyces halyziae and Laboulbenia quarantenae spp. nov

Fungal Systematics and Evolution: FUSE 5

Studies of Laboulbeniales on Myrmica ants (IV): host-related diversity and thallus distribution patterns of Rickia wasmannii