Abstract
Bamboo species serve as hosts to diverse microfungi, with the genus Dictyoarthrinium being a prevalent member. This paper introduces Dictyoarthrinium bambusae as a new species and reports D. thailandicum as a new record for India, both identified from bamboo species in Goa. These taxa were identified based on phylogenetic analyses of nuclear ribosomal DNA (LSU, SSU, and ITS) and protein‐coding genes (TEF1‐ α ), plus morphological comparisons. This finding contributes to the growing knowledge on the microfungal diversity associated with bamboo species, emphasising the role of bamboos as distinctive habitats for fungal communities.