摘要：Two species of sooty mould-like taxa, were obtained from living leaves of Coffea arabica
plants collected in Chiang Mai Province, Thailand. Differences in phenotypic and phylogenetic
characteristics based on combined large subunit nuclear ribosomal DNA and internal transcribed
spacer sequences indicated that the two isolates represent two novel species (Phaeosaccardinula
coffeicola and Trichomerium chiangmaiensis) within the order Chaetothyriales. Phaeosaccardinula
coffeicola (Chaetothyriaceae) is distinguished morphologically from related species by its smaller
asci and ascospores. Trichomerium chiangmaiensis (Trichomeriaceae) is morphologically
distinguishable from its phylogenetically related species by its smaller conidial arms. Detailed
taxonomic descriptions and illustrations of the new species are provided.
关键词：Chaetothyriaceae ; Coffea arabica ; new species ; sooty mould ; Trichomeriaceae
