Abstract

Two species of Ophiostoma were isolated from four bark beetles (i.e., Cryphalus montatus, C. piceae, Dryocoetes hectographus, and Polygraphus proximus) infesting Abies veitchii and from their galleries in the waveregenerated forests in the central part of the main island (Honshu) of Japan. One of them is described here as a new species, Ophiostoma subalpinum, and the other is identified as O. davidsonii, newly reported in Japan. Ophiostoma subalpinum is characterized by short ostiolar hyphae, oblong or allantoid ascospores enclosed in a thin, hyaline sheath, and a Pesotum anamorph.

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