Seven new species of from conifers in Norway, Poland, and Russia.

During surveys of insect-associated mycobiomes in Norway, Poland, and Russia, isolates with affinity to (Ophiostomatales, Ascomycota) were recovered. In this study, eight known species as well as the newly collected isolates were compared based on morphology and DNA sequence data for four gene regions. The results revealed seven new species, described here as , and . In addition to these species, and were commonly found in Norway. All new species were recovered from conifers in association with bark beetles, cerambycid beetles, and weevils and were morphologically similar, predominantly with pesotum-like asexual morphs. Where sexual morphs were present, these were small ascomata with short necks and rod-shaped ascospores having hyaline sheaths. The results suggest that species are common members of the Ophiostomatales in conifer ecosystems.