Neosphaerellopsis Crous & Trakun., in Trakunyingcharoen, Lombard, Groenewald, Cheewangkoon, Toanun, Alfenas & Crous, IMA Fungus 5(2): 407 (2014)
Index Fungorum number: IF 810841; Facesoffungi number: FoF 08336, 1 morphological species (Species Fungorum 2021), 1 species with molecular data.
Saprobic on leaves. Sexual morph: Unknown. Asexual morph: Conidiomata globose, superficial, solitary or aggregated, mostly unilocular, sometimes multilocular within the same stromata, with central ostiole; outer layers composed of pale to medium brown textura angularis, becoming thin-walled and hyaline toward the inner region, ostiolate. Conidiophores reduced to conidiogenous cells. Conidiogenous cells hyaline, phialidic with visible periclinal thickening, at times with 1–2 minute apical per current proliferations, dolliform to ampulliform. Conidia hyaline, narrowly ellipsoidal, the base truncate, with central median septum, with flaring mucoid appendage at one end (Adapted from Trakunyingcharoen et al. 2014).
Type species: Neosphaerellopsis thailandica Crous & Trakun.
Notes: Neosphaerellopsis was introduced by Crous and Trakunyingcharoen (2014) with N. thailandica as type species. Neosphaerellopsis morphologically resembles Sphaerellopsis but can be differentiated based on DNA sequence data. Neosphaerellopsis is also similar to Tiarospora, but differs in that the latter has deeply immersed, stromatic pycnidia, percurrent proliferating conidiogenous cells, and broadly ellipsoidal conidia that turn brown with age (Nag Raj 1993). Neosphaerellopsis is phylogenetically a distinct genus in Phaeosphaeriaceae.