artashat orthonairovirus artashat orthonairovirus artashat orthonairovirus, also called artashat virus (artsv), is a species in the genus orthonairovirus. it was first isolated in armenia in 1972 from ornithodoros alactagalis, a soft tick of the family argasidae. artashat orthonairovirus virus classification (unranked): virus realm: riboviria kingdom: orthornavirae phylum: negarnaviricota class: ellioviricetes order: bunyavirales family: nairoviridae genus: orthonairovirus species: artashat orthonairovirus