Neochaetothyrina Crous, gen. nov.

MycoBank number: MB 839531; Index Fungorum number: IF 839531; Facesoffungi number: FoF 11324;

Etymology: Name refers to its morphological similarity to Chaetothyrina.

Classification: Phaeothecoidiellaceae, Mycosphaerellales, Dothideomycetes.

Leaf spots absent, saprobic. Ascomata hypophyllous, superficial on leaf tissue, brown, developing beneath a brown mycelial layer, globose, cupulate when dry, surface of brown textura epidermoidea, wall of 2 – 3 layers of brown textura angularis; outer wall of ascomata forming brown, radiating superficial hyphae, branched, septate, anastomosing, with mucoid sheath, constricted at septa; hyphopodia not seen. Setae arising from outer wall of ascoma, dark brown, verruculose to warty, thick-walled, flexuous, multi-septate, tapering to subobtuse apex, at times also arising from superficial mycelium surrounding ascoma, with basal T-cell, slightly swollen. Pseudoparaphyses hyaline, smooth, cellular, constricted at septa, anastomosing. Asci arranged in basal layer, obovoid to broadly ellipsoid, bitunicate, 8-spored, with apical chamber. Ascospores multiseriate, hyaline, smooth, thick-walled, guttulate, granular, fusoid-ellipsoid, straight or curved, apex subobtuse, tapering to obtuse base, constricted at median septum, widest above septum, encased in mucoid sheath.

Type species: Neochaetothyrina syzygii Crous .