New species and new combinations in the genus Paraisaria (Hypocreales, Ophiocordycipitaceae) from the U.S.A., supported by polyphasic analysis

Richard M Tehan; Connor B Dooley; Edward G Barge; Kerry L McPhail; Joseph W Spatafora

doi:10.3897/mycokeys.100.110959

New species and new combinations in the genus Paraisaria (Hypocreales, Ophiocordycipitaceae) from the U.S.A., supported by polyphasic analysis

MycoKeys. 2023 Nov 13:100:69-94. doi: 10.3897/mycokeys.100.110959. eCollection 2023.

Authors

Richard M Tehan^{1

2}, Connor B Dooley¹, Edward G Barge³, Kerry L McPhail¹, Joseph W Spatafora¹

Affiliations

¹ Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, Oregon 97331, USA.
² Department of Chemistry and Biochemistry, Utica University, Utica, New York 13502, USA.
³ Department of Botany and Plant Pathology, College of Agricultural and Life Sciences, Oregon State University, Corvallis, Oregon 97331, USA.

Abstract

Molecular phylogenetic and chemical analyses, and morphological characterization of collections of North American Paraisaria specimens support the description of two new species and two new combinations for known species. P.cascadensissp. nov. is a pathogen of Cyphoderris (Orthoptera) from the Pacific Northwest USA and P.pseudoheteropodasp. nov. is a pathogen of cicadae (Hemiptera) from the Southeast USA. New combinations are made for Ophiocordycepsinsignis and O.monticola based on morphological, ecological, and chemical study. A new cyclopeptide family proved indispensable in providing chemotaxonomic markers for resolving species in degraded herbarium specimens for which DNA sequencing is intractable. This approach enabled the critical linkage of a 142-year-old type specimen to a phylogenetic clade. The diversity of Paraisaria in North America and the utility of chemotaxonomy for the genus are discussed.

Keywords: Ascomycota; Cicada; Cordyceps; Cyphoderris; Ophiocordyceps; Prionus; chemotaxonomy; entomopathogen.

Richard M. Tehan, Connor B. Dooley, Edward G. Barge, Kerry L. McPhail, Joseph W. Spatafora.

Abstract

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