Neochaetospora
Neochaetospora B. Sutton & Sankaran, Mycol. Res. 95(6): 768 (1991)
≡ Chaetospora Faurel & Schotter, Revue Mycol., Paris 30(3): 149 (1965) [1964]
Facesoffungi number: FoF 07474
Ascomycota, genera incertae sedis
Coprophilous on rodent dung (e.g., Massoutiera harterti). Sexual morph: undetermined. Asexual morph: Conidiomata black, pycnidial, innate-erumpent, globose, unilocular, setose, ostiolate. Ostiole single, circular, centrally located. Conidiomatal setae dark brown below, tapered and paler towards apex, subulate to irregular, rigid, straight or slightly curved, unbranched, smooth-walled, mostly restricted at ostiolar region, occasionally on the pycnidial wall. Conidiomatal wall composed of thick-walled, dark brown cells of textura angularis. Conidiophores reduced to conidiogenous cells. Conidiogenous cells arising from inner cell layer of conidiomata, hyaline, enteroblastic, phialidic, lageniform to cylindrical, discrete, determinate, smooth-walled, with flared collarettes. Conidia hyaline, cylindrical to fusiform, with truncate base, 2-septate, smooth-walled, bearing 3–5, unbranched, septate, flexuous, apical appendages arising from different loci of bulbous apical cell (Nag Raj 1993).
Type species: Neochaetospora quezelii (Faurel & Schotter) B. Sutton & Sankaran, Mycol. Res. 95(6): 768 (1991)
≡ Chaetospora quezelii Faurel & Schotter, Revue Mycol., Paris 29(3): 149 (1965) [1964]
Notes: Neochaetospora is a monotypic genus. The genus is similar to Pseudoneottiospora in having cylindrical or subcylindrical to fusiform conidia bearing unbranched, flexuous appendages. However, Neochaetospora possesses globose, setose conidiomata and 2-septate conidia with bulbous apical cell bearing 3–5-septate, apical appendages. Pseudoneottiospora has globose, glabrous conidiomata and 1–3-septate conidia with cylindrical or dolliform apical cell bearing 3-4-aseptate apical appendages (Nag Raj 1993). Neochaetospora has not been studied with molecular data. Future studies with fresh collections are needed to place it in a natural group.
Distribution: Sahara (Africa) (Nag Raj 1993).
Neochaetospora quezelii (redrawn from Nag Raj 1993) a Vertical section of conidioma. b Enlarged surface view of ostiolar setae and parietal cells. c Conidiogenous cells and developing conidia. d Conidia.
References:
Li WJ, McKenZie EHC, Liu JK, Bhat DJ, Dai DQ, Caporesi E, Tian Q, Maharachcikumbura SSN, Luo ZL, Shang QJ, Zhang JF, Tangthirasunun N, Karunarathna SC, Xu JC, Hyde KD (2020) Taxonomy and phylogeny of hyaline-spored coelomycetes. Fungal Diversity 100: pages279–801.
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