Abstract
Female adults of the redbay ambrosia beetle,
Xyleborus glabratus (
Coleoptera: Curculionidae: Scolytinae), from the southeastern USA were individually macerated and serially diluted onto culture media for isolation of fungal symbionts. Six
Raffaelea species were recovered:
R. lauricola, R. arxii, and four new species:
R. subalba, R. ellipticospora, R. fusca and
R. subfusca. Phylogenetic analyses of LSU rDNA sequences placed these mycangial inhabitants and other species of
Raffaelea, as well as some species of
Ambrosiella associated with ambrosia beetles, into a monophyletic, asexual clade within
Ophiostoma. New combinations in
Raffaelea are made for some
Ambrosiella species and
Dryadomyces amasae. Ambrosia beetle symbionts with Ceratocystis affinities, including
A. trypodendri comb. nov., are retained in
Ambrosiella, but
Ambrosiella species associated with bark beetles are transferred to the anamorph genus
Hyalorhinocladiella as
H. ips, H. macrospora, and
H. tingens.
Keywords
Grosmannia,
Leptographium,
Ophiostomataceae,
Ophiostomatales,
Scolytidae
Citation
Harrington, T.C.; Aghayeva, D.N.; Fraedrich, S.W. 2010. New combinations in Raffaelea, Ambrosiella, and Hyalorhinocladiella, and four new species from the redbay ambrosia beetle, Xyleborus glabratus. Mycotaxon 111:337-361.