Haploviricotina
Haploviricotina is a subphylum of viruses in the phylum Negarnaviricota. It is one of only two virus subphyla, the other being Polyploviricotina, which is also in Negarnaviricota. The name comes from ἁπλό, the Ancient Greek for 'simple', along with the suffix for a virus subphylum; 'viricotina'.