| Kingdom | Animalia |
|---|---|
| Phylum | Onychophora |
| Class | Onychophora |
| Order | Onychophora |
| Family | Peripatopsidae |
| Genus | Peripatopsis (1) |
| Size |
Length (onychophora): up to 10 cm (2) |
There are three species listed on the IUCN Red List 2006 (1); the white cave velvet worm (P. alba) and the Knysna velvet worm (P. clavigera) are classified as Vulnerable (VU), and Lion's Hill velvet worm (P. leonina) is classified as Critically Endangered (CR). Two further species not listed by the IUCN Red List are known – P. moseleyi and P. capensis (3).