Hypoviridae is a family of viruses. Fungi serve as natural hosts. There are currently four species in this family, divided among 1 genera. Diseases associated with this family include: host virulence reduction. 
The diameter is around 50-80nm. Genomes are linear, around 9-13kb in length. The genome has 1 or 2 open reading frames.Hypoviridae was the first family of viruses described that lacked a capsid. and does not assemble any virion to spread.
Viral replication is cytoplasmic. Replication follows the double-stranded RNA virus replication model. Double-stranded rna virus transcription is the method of transcription. The virus exits the host cell by cell to cell movement. Fungi serve as the natural host. The virus never leaves its host and probably replicates in pleomorphic host-derived lipid vesicles. Transmission is probably dependent on host hyphal anastomosis.