Aestipascuomyces Marcus Stabel, Radwa Hanafy, Tabea Schweitzer, Meike Greif, Habibu Aliyu, Veronika Flad, Diana Young, Michael Lebuhn, Mostafa Elshahed, Katrin Ochsenreither, and Noha Youssef, gen. nov.

MycoBank number: MB 837524; Index Fungorum number: IF 837524; Facesoffungi number: FoF;

Typification: Aestipascuomyces dupliciliberans Marcus Stabel, Radwa Hanafy, Tabea Schweitzer, Meike Greif, Habibu Aliyu, Veronika Flad,  Diana  Young,  Michael  Lebuhn,  Mostafa  Elshahed, Katrin Ochsenreither, amd Noha Youssef (holotype).

Etymology: Aestipascuo = derived from aestas, Latin for summer, and pastura, Latin for pasture; myces = the Greek name for fungus.

Obligate anaerobic fungus that produces globose polyflagellated zoospores (7–20 flagella). Zoospores germinate into determinate monocentric thalli with highly-branched, anucleated rhizoids that lack constriction and intercalary swellings. The clade is defined by the sequences MW019479MW019500 and MW049132MW049145 (ITS-1, 5.8S rDNA, ITS2, D1–D2 28S rDNA). The most genetically-similar genera are Feramyces, which is characterized by its polyflagellated zoospores (7–16) and monocentric thalli that usually produce a single terminal sporangium, and on some occasions produce pseudo-intercalary and sessile sporangia and Neocallimastix, which is characterized by the production of polyflagellated zoospores (7–30), monocentric thalli, and empty zoospore cysts that remain at the base of sporangiophores.