Paramacroventuria Crous & Bulgakov, gen. nov.
MycoBank number: MB 841787; Index Fungorum number: IF 841787; Facesoffungi number: FoF12733;
Etymology: Name refers to the fact that it is closely related to Macroven turia.
Classification: — Didymellaceae, Pleosporales, Dothideo mycetes.
Conidiomata pycnidial, globose, brown, with central periphysate ostiole; wall of 3 – 6 layers of medium brown textura angularis. Conidiophores reduced to conidiogenous cells lining inner cavity, hyaline, smooth, ampulliform, proliferating percurrently at apex. Conidia solitary, brown, finely roughened, medianly septate, guttulate, ellipsoid, apex obtuse, base with truncate hilum.
Type species: Paramacroventuria ribis Crous & Bulgakov .
Notes: Paramacroventuria was introduced by Crous et al. (2021) to accommodate its type species, P. ribis, and belongs to the family Didymellaceae. This monotypic genus is known from its asexual morph, and is characterized by brown, medially septate, ellipsoid conidia, with a truncate hilum at the base, and percurrently proliferating conidiogenous cells. Based on phylogenetic analysis using LSU, ITS, rpb2 and tub2 datasets, Paramacroventuria clustered close to the genera Macroventuria and Juxtiphoma. However, members of Macroventuria are all observed by the features from the sexual morph (Hou et al. 2020a), and Juxtiphoma species produce chlamydospores (Valenzuela-Lopez et al. 2018, Hou et al. 2020b, Yasanthika et al. 2021), which are lacking in Paramacroventuria. Paramacroventuria was recorded as a pathogen causing leaf spots on Ribes aureum in Russia (Crous et al. 2021).
Species