What is "corticovirus"

Corticovirus is a genus of viruses, in the family Corticoviridae. Bacteria serve as natural hosts. There is currently only one species in this genus: the type species Pseudoalteromonas phage PM2. The name is derived from Latin cortex, corticis (meaning 'crust' or 'bark'). However, prophages closely related to PM2 are abundant in the genomes of aquatic bacteria, suggesting that the ecological importance of corticoviruses might be underestimated. The whole family (Corticoviridae) has been little-studied.