DNA virus
Halorubrum pleomorphic virus 1 (HRPV-1) is a single stranded DNA virus that infects the species of the archaeal genus "Halorubrum". It is unlike any other known virus infecting the archaea with a single stranded DNA genome and an external lipid envelope and is classified in the family "Pleolipoviridae", genus "Alphapleolipovirus", species "Halorubrum virus HRPV1".