Abstract
Seven new
Entomocorticium species (Peniophoraceae) are described based on morphology andphylogenetic analyses. Along with the type species (
E.dendroctoni),
Entomocorticium comprises eight species of nutritional symbionts of pine bark beetles in North America.
Entomocorticium cobbii is the mycangial associate of the southern pine beetle,
Dendroctonus frontalis, and
E. parmeteri is the mycangialassociate of the western pine beetle,
D. brevicomis.
Entomocorticium whitneyi, E. portiae, E. kirisitsii, E.oberwinkleri and the previously described
E. dendroctoni have been isolated from galleries of
D.ponderosae and D. jeffreyi in western North America.
Entomocorticium sullivanii forms an ambrosia-like layer of basidia and basidiospores in the pupal chambers of
Ips avulsus in the southeastern USA.
Entomocorticium is phylogenetically placed within
Peniophora, a corticioid genus of wood decay fungi with wind-dispersed basidiospores. At least four species of
Entomocorticium produce basidiospores on basidia with reduced sterigmata that apparently do not forcibly discharge basidiospores. Another basidiomycete,
Gloeocystidium ipidophilum, was described from
Ips typographus galleries in Europe, but it is phylogenetically and taxonomically placed in another genus of wood decay fungi as
Cylindrobasidium ipidophilum (Physalacriaceae). The free-livingwood-decay fungus
Phlebiopsis gigantea (Phanerochaetaceae) has been occasionally associated with bark beetles but is unrelated to
C. ipidophilum or
Entomocorticium.
Keywords
Insect symbionts,
Mutualism,
Agaricomycetes
Citation
Harrington, T. C.; Batzer, J. C.; McNew, D. L. 2021. Corticioid basidiomycetes associated with bark beetles, including seven new Entomocorticium species from North America and Cylindrobasidium ipidophilum, comb. nov. Antonie van Leeuwenhoek. 114(5): 561-579. https://doi.org/10.1007/s10482-021-01541-7.