Stromata solitary or several, clavate, simple or less frequently branched, on pupa of Lepidoptera (Limacodidae). Fertile area orange to orangish red, differentiated from stipe, 2-8 x 1-3 mm. Stipe orangish red to red, 3-12 x 0.5-1.5 mm.
Perithecia crowded, immersed, red, ordinal in orientation, ovoid to fusiform, 360-400 x 130-200 um.
Asci 8-spored, hyaline, cylindrical, possessing a prominent apical cap.
The type species of Mariannaea is M. elegans (Corda) Samson and it is a member of Nectriaceae in a recent phylogenetic study. The taxonomic revision of M. pruinosa is necessary to reflect its phylogenetic placement in Cordycipitaceae.
Pupa of Limacodidae (Lepidoptera)
EFCC 4295, EFCC 5197, EFCC 5693, EFCC 7481, NHJ 10627, NHJ 10684
Cordyceps pruinosa can be easily identified using its host affiliation being a pathogen of Limacodid pupa (Lepidoptera). It is restricted to Asia and frequently found in geographically distant countries (e.g., China, Japan, Sri Lanka, Thailand). However, In the description of Kobayasi (Kobayasi, 1941), this species was recorded to have a filiform ascospores that are disarticulated into partspores. However, the observation for the species
lectotypication is necessary.
similar to C. ninchukispora.
Cordyceps subg. Bolacordyceps sensu Eriksson
Type partspores in original description of Petch and Kobayasi.
Petch, T., 1924. Studies in entomogenous fungi. IV. Some Ceylon Cordyceps. Transactions of the British Mycological Society, 10, p. 28–45.
Kobayasi, Y., 1941. The genus Cordyceps and its allies. Science reports of the Tokyo Bunrika Daigaku (Section B, no. 84), 5, p.53-260.
Sung et al., 2007. Phylogenetic classification of Cordyceps and the clavicipitaceous fungi. Studies in Mycology, 57(1), p.5-59.