Interesting mycoparasites and Paradingleyomyces lepidopterorum gen. et sp. nov. (Hypocreales, Polycephalomycetaceae) from Yunnan Province, China

By

Wang, Yi
Wei, De-Ping
Peng, Xing-Can
Kang, Jichuan
Li, Zengzhi
Li, Chun-Ru
Zhang, Xian
Wang, Gui-Ying
Zhou, Yun
He, Xin-Sheng
Chomnunti, Putarak
Wen, Ting-Chi

Type

Article

Date of Publication

2024

Original Publication

MycoKeys

Volume

110

Pages

185--210

Subjects

entomopathogenic fungi , new genus , Phylogeny , taxonomy

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers 2011-

Identifiers

DOI: https://doi.org/10.3897/mycokeys.110.134132

 

Abstract

A novel genus, Paradingleyomyces was introduced to accommodate Pa. lepidopterorumsp. nov., based on a multigene phylogenetic analysis and its distinct morphological characteristics. Maximum likelihood (ML) and Bayesian inference analyses (BI) of ITS, SSU, LSU, tef-1α, rpb1, and rpb2 sequence data shown that Pa. lepidopterorum formed an independent lineage nested between Perennicordyceps and Dingleyomyces. Morphologically, Paradingleyomyces is distinguished from Perennicordyceps by the presence of a white subiculum on the stromata of Ophiocordyceps cf. cochlidiicola. Perithecia are produced sporadically from the base to the apex of the stromata, and the secondary ascospores exhibit a notable length-to-width ratio. These characteristics distinguish Paradingleyomyces from Perennicordyceps which exhibits tortuous, branched, clavate to cylindrical stromata with rhizomorphs, parasitism of coleopteran and hemipteran larvae, and colonizes a broader range of fungal hosts. Additionally, perithecia in Perennicordyceps typically arise from the middle to the upper regions of the stromata, with secondary ascospores displaying a comparatively lower length-to-width ratio. Paradingleyomyces is morphologically identical to Dingleyomyces in its direct production of superficial perithecia on the stromata of Ophiocordyceps species. However, the phylogenetic analysis indicates that Paradingleyomyces and Dingleyomyces are not congeneric. Moreover, this study introduces another novel species, Polycephalomyces tengchongensis, and a novel sexual morph of Pleurocordyceps yunnanensis. Dimorphic phialides and conidia of Pleurocordyceps parvicapitata were observed and described for the first time based on a fresh collection from Tengchong County, Yunnan Province, China.