Peripatidae is a family of velvet worms. The oldest putative representatives of the family herald from Burmese amber dated to the mid-Cretaceous, around 100 million years ago, with representatives from Dominican and Baltic amber attesting to a broader distribution in the Palaeogene / Neogene; molecular variability suggests that the family's crown group may have arisen in the early Mesozoic.
Epiperipatus imthurni is a species of velvet worm in the family Peripatidae. This species ranges from light orange or yellowish brown to a dark brown on its dorsal surface; the ventral surface is a lighter orangeish shade of the same color. The type locality is in Guyana. No males have been recorded from this species. Females can reach a large size, up to 2.25 g in weight, and range from 25 mm up to 96 mm in length. They have 29 to 32 pairs of legs, usually 30 or 31. Females from Trinidad were shown to reproduce via parthenogenesis; the only velvet worm known to do so.
Epiperipatus acacioi is a species of velvet worm in the Peripatidae family. This species is dark purple with a bilaterally symmetric pattern on its dorsal surface and ranges from 13 mm to 47 mm in length. Males of this species have 24 to 27 pairs of legs, usually 25 or 26; females have 26 to 30, usually 27 or 28. The type locality is in Minas Gerais, Brazil.
Epiperipatus biolleyi is a species of velvet worm in the Peripatidae family. This species is red, without any pattern, on its dorsal surface. Females of this species have 28 to 32 pairs of legs; males have 25 to 30. Females range from 18 mm to 75 mm in length, with a mean length of 52 mm, whereas males range from 18 mm to 55 mm, with a mean length of 38 mm. The type locality is in Costa Rica.
Epiperipatus brasiliensis is a species of velvet worm in the Peripatidae family. Males of this species have 29 pairs of legs; females have 31 or 33. This species ranges from 37 mm to 80 mm in length. The type locality is in Pará, Brazil. Epiperipatus vagans from Barro Colorado Island (Panama) was originally described as subspecies of Epiperipatus brasiliensis, but is now treated as a full species.
Epiperipatus simoni is a species of velvet worm in the Peripatidae family. This species is dark brown without any pattern on its dorsal surface. Females of this species range from 40 mm to 68 mm in length and have 28 to 32 pairs of legs. The type locality is in Venezuela.
Epiperipatus edwardsii is a species of velvet worm in the family Peripatidae. Females of this species have 29 to 34 pairs of legs; males have 28 to 30. Females range from 23 mm to 56 mm in length, whereas males range from 25 mm to 30 mm. The type locality is in French Guiana.
Epiperipatus isthmicola is a species of velvet worm in the Peripatidae family. This species is a dark brown, almost black, without any pattern on its dorsal surface. Females of this species have 29 to 32 pairs of legs; males have 26 or 27. Females range from 20 mm to 73 mm in length, whereas males range from 20 mm to 48 mm. The type locality is in Costa Rica.
Macroperipatus torquatus is a species of velvet worm in the Peripatidae family. This species has a brown or red back with a bright yellow collar, a black head with black antennae, a white underside with a red tint, and 37 to 42 pairs of legs. These velvet worms range from 100 mm to 150 mm in length. This species is notable for its numerous legs and its large size, with mature females ranging from 1.75 g to as much as 5.68 g in weight. This species is found in Trinidad.
Macroperipatus valerioi is a species of velvet worm in the Peripatidae family. Females of this species have 34 pairs of legs. The type locality is in Costa Rica.
Oroperipatus balzani is a species of velvet worm in the Peripatidae family. Males of this species range from 27 mm to 31 mm in length and have 26 or 27 pairs of legs. The type locality is in Bolivia and Brazil.
Oroperipatus belli is a species of velvet worm in the Peripatidae family. The female of this species has 28 pairs of legs; the male has 25 pairs. The type locality is in Ecuador.
Oroperipatus cameranoi is a species of velvet worm in the Peripatidae family. This species ranges from 34 mm to 55 mm in length. Females of this species have 34 to 36 pairs of legs; males have 32. The type locality is in Ecuador.
Oroperipatus soratanus is a species of velvet worm in the Peripatidae family. Females of this species have 32 pairs of legs; males have 28. The type locality is in Bolivia.
Oroperipatus tuberculatus is a species of velvet worm in the Peripatidae family. This species has 37 pairs of legs. The type locality is in Colombia.
Peripatus danicus is a species of velvet worm in the Peripatidae family. Females of this species have 31 to 33 pairs of legs; males have 26 to 28. Females range from 26 mm to 45 mm in length, whereas males range from 9 mm to 21 mm. The type locality is in Saint Thomas Island.
Peripatus heloisae is a species of velvet worm in the Peripatidae family. Females of this species have 31 to 34 pairs of legs; males have 28 to 32. The type locality is in Mato Grosso, Brazil.
Peripatus sedgwicki is a species of velvet worm in the Peripatidae family. Females of this species have 29 to 32 pairs of legs; males have 28 to 30. Females range from 25 mm to 60 mm in length, while males range from 23 mm to 30 mm. The type locality is in Venezuela.
Peripatus swainsonae is a species of velvet worm in the Peripatidae family. Females of this species have 31 to 34 pairs of legs; males have 28 to 30. The type locality is in Jamaica.
Macroperipatus ohausi is a species of velvet worm in the Peripatidae family. Females of this species have 27 or 28 pairs of legs. The type locality is Rio de Janeiro, Brazil.
