Xenomycetes  Xenomycetes is a genus of handsome fungus beetles in the family Endomychidae. It is the only genus in the subfamily Xenomycetinae. There are at least two described species in "Xenomycetes", both endemic to northwestern North America. These two species belong to the genus "Xenomycetes": Data sources: i = ITIS, c = Catalogue of Life, g = GBIF, b = Bugguide.net