Peripatus is a genus of velvet worms in the Peripatidae family. The name "peripatus" is also used to refer to the Onychophora as a whole, although this group comprises many other genera besides Peripatus. The genus Peripatus is found in Central America, the Caribbean and northern South America. Velvet worms in this genus can have as few as 24 or 25 pairs of legs or as many as 36 leg pairs. This genus is viviparous, with mothers supplying nourishment to their embryos through a placenta.
Plicatoperipatus is a monospecific genus of velvet worm containing the single species Plicatoperipatus jamaicensis. It is endemic to Jamaica. Females of this species can have as many as 43 pairs of legs, the maximum number found in the phylum Onychophora. In a large sample collected in 1988, however, females ranged from 35 to 39 leg pairs, with 37 as the mean and the most common number, and males ranged from 31 to 37 leg pairs, with 35 as the mean and the most common number. This species ranges from 25 mm to 65 mm in length. In the 1988 sample, the mean length for males was 33 mm, and the mean length for mature females was 51 mm. This species is viviparous, with mothers supplying nourishment to their embryos through a placenta.
Metaperipatus is a genus of velvet worms in the family Peripatopsidae that includes the species Metaperipatus inae. Males of this species have 20 pairs of legs; females have 22 pairs. This species is a dark grayish blue in color, with large orange/red spots. When walking, females of this species can be as long as 85 mm, and males can be as long as 60 mm. The type locality is in central Chile.
Eoperipatus horsti is a species of velvet worm in the Peripatidae family. This species is brown with pale spots and a darker line running down the middle of its back. Females of this species have 24 or 25 pairs of legs; males have 23 or 24, usually 23. The males of this species can reach 40 mm in length, and the females can reach 46 mm in length, but the average specimen is 34 mm in length. The type locality is in West Malaysia.
Epiperipatus trinidadensis is a species of velvet worm in the Peripatidae family. Males of this species have 27 to 30 pairs of legs, usually 28; females have 28 to 31, usually 30. The type locality is in Trinidad.
Macroperipatus guianensis is a species of velvet worm in the Peripatidae family. The male of this species has 24 pairs of legs; females have 27 or 28 leg pairs, usually 28. This species ranges from 30 mm to 80 mm in length. The type locality is in Guyana.
Opisthopatus cinctipes is a species of velvet worm in the Peripatopsidae family. This species has 16 pairs of legs, all with claws and all used for walking. Females range from 7 mm to 50 mm in length, whereas males range from 6 mm to 36 mm. Like other velvet worms in this genus, this species exhibits matrotrophic viviparity, that is, mothers in this genus retain eggs in their uteri and supply nourishment to their embryos, but without any placenta. The type locality is in South Africa.
Oroperipatus bimbergi is a species of velvet worm in the Peripatidae family. The female of this species has 27 or 28 pairs of legs, usually 27; the male has 24 or 25 usually, rarely 26. The type locality is in Colombia.
Oroperipatus bluntschli is a species of velvet worm in the Peripatidae family. The original description of this species is based on a female specimen measuring 100 mm in length; its 40 pairs of legs are notable for approaching the maximum number (43) recorded in velvet worms. The type locality is in Peru.
Oroperipatus ecuadoriensis is a species of velvet worm in the Peripatidae family. The original description of this species is based on a female specimen notable for its large size ; this description also reports 39 pairs of legs. The type locality is in Ecuador.
Oroperipatus lankesteri is a species of velvet worm in the Peripatidae family. This species is brownish grey and is notable for its large size, which ranges from 32 mm up to 82 mm in length. Females of this species have 37 or 38 pairs of legs; males have 33 to 35 pairs. Like other neotropical peripatid velvet worms, this species is viviparous, with mothers supplying nourishment to their embryos through a placenta. The type locality is in Ecuador.
Oroperipatus peruvianus is a species of velvet worm in the Peripatidae family. Males of this species have 34 pairs of legs; females have 36 or 37. Female specimens range from 55 mm to 61 mm in length. The type locality is in Peru.
Peripatus brolemanni is a species of velvet worm in the Peripatidae family. Females of this species have 30 to 33 pairs of legs; males have 29. Females range from 39 mm to 65 mm in length, whereas males range from 27 mm to 28 mm. The type locality is in Venezuela.
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 evelinae is a species of velvet worm in the Peripatidae family. The male of this species has 33 pairs of legs; females have 35 or 36 leg pairs. This species has more legs than any other species of Peripatus; the females of the other species have at most 34 leg pairs, and the males have at most 32. The original description of P. evelinae was based on two specimens and reported females with 32 and 34 leg pairs, but another examination of these specimens revealed a male with 33 leg pairs and a female with 35 leg pairs instead as well as numerous embryos, including females with 35 and 36 leg pairs. The male specimen is 44 mm long; the female is 65 mm long. The type locality is in Goiás, Brazil.
Peripatus juanensis is a species of velvet worm in the Peripatidae family discovered in Puerto Rico in 1900. As of 2018, it is the only velvet worm found in Puerto Rico. Females of this species have 31 or 32 pairs of legs; males have 27.
Mongeperipatus solorzanoi, or Solórzano's velvet worm, is a species of velvet worm in the Peripatidae family. Like other neotropical peripatid velvet worms, this species is viviparous, with mothers supplying nourishment to their embryos through a placenta.
Paraperipatus ceramensis is a species of velvet worm in the family Peripatopsidae. This species is grey-green with rust speckles. Females of this species have 21 or 22 pairs of legs and range from 13 mm to 55 mm in length. The type locality is in Seram, Indonesia.
Peripatopsis sedgwicki is a species of velvet worm in the Peripatopsidae family. This species can have either 20 or 21 pairs of legs, but descriptions have usually reported 20 pairs of clawed legs. Females of this species range in size from 12 mm to 68 mm in length, whereas males range from 10 mm to 46 mm in length. The color of this species varies from blue-tan green to bright orange and brown violet. Like other velvet worms in this genus, this species exhibits matrotrophic viviparity, that is, mothers in this genus retain eggs in their uteri and supply nourishment to their embryos, but without any placenta. The type locality is in South Africa.
Peripatopsis alba, the white cave velvet worm, is a species of velvet worm in the family Peripatopsidae. This species has 18 pairs of clawed legs, with the last pair reduced, and no eyes. Specimens range from 32 mm to 48 mm in length. Like other velvet worms in this genus, this species exhibits matrotrophic viviparity, that is, mothers in this genus retain eggs in their uteri and supply nourishment to their embryos, but without any placenta.
