Tolypocladium bacillisporum (Ophiocordycipitaceae): A new parasite of Elaphomyces from Japan

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Yamamoto K, Sugawa G, Takeda K, Degawa Y (2022) Truffology 5(1): 15–21
Submitted: 25 February 2022
Accepted: 24 March 2022
Published: 31 March 2022

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Abstract

The genus Tolypocladium (Ophiocordycipitaceae) includes species that are parasitic on the truffle-like ascomycete
Elaphomyces. In addition to the 16 known species of mycoparasitic Tolypocladium from Japan, at least 19
undescribed species have been recorded from there. One of these species, called in Japan as “Shiroashi-hime-hanayasuri-take”, is a parasite of the Elaphomyces sect. Ceratogaster, and has been collected from Hokkaido,
Japan. We found a new locality for this species in Miyagi Prefecture, and conducted morphological observations,
isolation, and molecular phylogenetic analyses of the specimens from Japan. The part-spore shape of this species
was different from that of T. jezoense, a macromorphologically similar species and the phylogenies strongly
indicated that “Shiroashi-hime-hanayasuri-take” is an independent species. Accordingly, this undescribed species
is herein proposed as a new species, T. bacillisporum

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