Wiktionary
orthobunyavirus
n. Any of the genus (taxlink Orthobunyavirus genus noshow=1) of bunyaviruses.
Wikipedia
Orthobunyavirus
Orthobunyavirus is a genus of the Bunyaviridae family. There are currently ~170 viruses recognised in this genus. These have been assembled into 48 species and 19 serogroups.
The type species is Bunyamwera virus.