Paraisaria Samson & B.L. Brady, Trans. Br. mycol. Soc. 81(2): 285 (1983)
Sordariomycetes, Hypocreomycetidae, Hypocreales, Ophiocordycipitaceae
Index Fungorum number: IF 25834; 14 morphological species (Species Fungorum 2021), 14 species with sequence data.
Pathogenic on insects. Sexual morphs: Stroma solitary or multiple, stipitate. Stipes erect or slightly flexuous, cylindrical, colorless, fleshy, terminating in a fertile head. Fertile parts white, chestnut brown to paler pink, ovoid, ellipsoidal, subglobose to globose. Perithecia completely immersed, ostiolate, gregarious. Peridium comprised of hyaline, thick-walled, smooth-walled cells of textura angularis. Asci cylindrical, 8-spored, unitunicate, with thicken apex. Apical caps hemispherical, with a narrow tunnel throughout the center. Ascospores hyaline, filiform, multi-septate, breaking into one-celled part-spores when mature. Asexual morphs: Synnemata white, rope-like, giving arise to numerous conidiophores. Conidiophores verticillately branched, septate. Conidiogenous cells phialidic, flask-shaped, usually sympodially proliferating, terminating in 1–4 necks. Conidia hyaline, cylindrical to fusiform, smooth-walled, aseptate, usually aggregate in slimy heads (Wei et al. 2021)
Type species: Paraisaria Samson & B.L. Brady, Trans. Br. mycol. Soc. 81(2): 285 (1983)
Notes: Paraisaria was resurrected from Ophiocordyceps to accommodate three new species and eight combinations based on morphology and phylogenetic analyses (Mongkolsamrit et al. 2019). Additional three novel species were introduced by Wei et al. (2021). Species of this genus are able to infect larvae, nymphs and adult insects in Coleoptera, Dictyoptera, Diptera, Hemiptera, Hymenoptera, Lepidoptera and Orthoptera (Wei et al. 2021).
Mongkolsamrit S, Noisripoom W, Arnamnart N, Lamlertthon S, Himaman W, Jangsantear P. et al. 2019 – Resurrection of Paraisaria in the Ophiocordycipitaceae with three new species from Thailand. Mycological Progress 18(9):1213–1230.
Wei DP, Wanasinghe DN, Xu JC, To-anun C, Mortimer PE, Hyde KD et al. 2021 – Three novel entomopathogenic fungi from China and Thailand. Frontier in Microbiologgy 11: 608991.