Uncovering cryptic species diversity of () associated with from Thailand.

This study advances our understanding of , an extensively studied entomopathogenic fungus within the , particularly in Thailand. We introduce seven novel species associated with - , , , , , , and . Remarkably, , , and exhibit ascomata on the subterminal region of the stromata, with the asexual form appearing at the apex of the stipe, reminiscent of . In contrast, produces its ascomata in the upper region of the stipe. Shared traits include immersed perithecia and part-spores production. and produce pseudo-immersed perithecia, with the former producing ascospores breaking into four part-spores, and the latter displaying 32 part-spores. is also introduced due to morphological distinctions from closely related species. Phylogenetic analyses based on multigene loci (LSU, , , ) robustly confirm the placement of these new species within . Additionally, we report a new record of in Thailand. Mongkolsamrit S, Noisripoom W, Tasanathai K, Khonsanit A, Thanakitpipattana D, Lamlertthon S, Himaman W, Crous PW, Stadler M, Luangsa-ard JJ (2024). Uncovering cryptic species diversity of () associated with from Thailand. : 223-250. doi: 10.3114/fuse.2024.14.15.