Abstract
Two new species found in northern Thailand, Cordyceps chiangdaoensis and Cordyceps morakotii, pathogenic to Coleoptera larvae and Odontomachus ant pupae, respectively, are described using morphological and molecular phylogenetic data. Both species produce narrowly ovoid superficial perithecia at the end of a cylindrical stroma, bola ascospores, Evlachovaea-like conidial morph, and cylindrical conidia with rounded ends. These two species differ from other bola ascospore-producing species in the genus Cordyceps in the sizes of the ascospores and perithecia, as well as the host. Phylogenetic analyses based on internal transcribed spacer (ITS) regions of the rDNA and partial sequences of translation elongation factor 1-alpha (TEF1) data strongly support these two fungi as two distinct new species in the Cordycipitaceae.
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