Arachnomyces pilosus (Guarro, Gene & Ulfig) Sun, Houbraken et A.J. Chen, 2019

Sun, Bing-Da, Zhou, Yu-Guang, Chen, Amanda-Juan & Houbraken, Jos, 2019, Phylogeny and a new species of the genus Arachnomyces (Arachnomycetaceae), Phytotaxa 394 (1), pp. 89-97 : 94

Arachnomyces pilosus (Guarro, Gene & Ulfig) Sun, Houbraken et A.J. Chen comb. nov.

MycoBank MB 822107

Basionym : Chrysosporium pilosum Gene, Guarro & Ulfig, 1994 . Mycotaxon 50: 108.

Notes: Chrysosporium pilosum was characterized by a restricted growth on agar media and the production of conidia on deflected short protrusions. This type of conidiogenesis is not observed in other Arachnomyces species. The most striking feature of this species was, as already noted by Gene et al. (1994), the production of brown, thick-walled hyphae. They reported that similar structures were also produced by Onychocola canadensis , a species currently classified in Arachnomyces . As reported by Sigler et al. (1994), these brown hyphae were actually setae because they could arise from the vegetative hyphae in the absence of ascomata. Based on our phylogenetic analyses, this species can be best classified in Arachnomyces and it is most closely related to A. gracilis . Arachnomyces gracilis can be differentiated from A. pilosus by the production of ascomata and alternate arthroconidia, which are not observed in A. pilosus .