Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
Alphamononivirus is a genus of enveloped, positive-strand RNA viruses in the order Nidovirales which infect planarianflatworms. Member virus planarian secretory cell nidovirus (PSCNV) has the largest known nonsegmented RNA genome of 41.1kb of any RNA virus. The genus is monotypic. It contains the subgenus Dumedivirus, which contains only one species, Planidovirus 1. Alphamononivirus is also the only member of the subfamily Mononivirinae, which in turn is the only member of family Mononiviridae, which likewise is the only member of the Monidovirineae suborder.
References
^ "Virus Taxonomy: 2018 Release". International Committee on Taxonomy of Viruses (ICTV). October 2018. Archived from the original on 4 March 2018. Retrieved 26 January 2019.