haploviricotina 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 haplo, the ancient greek for 'simple', along with the suffix for a virus subphylum; 'viricotina'. haploviricotina vesicular stomatitis virus (vsv) virion and mononegavirales genomes virus classification (unranked): virus realm: riboviria kingdom: orthornavirae phylum: negarnaviricota subphylum: haploviricotina classes and orders see text taxonomy the subphylum haploviricotina is composed of 4 classes and 5 orders: chunqiuviricetes muvirales milneviricetes serpentovirales monjiviricetes jingchuvirales mononegavirales yunchangviricetes goujianvirales