Periegops

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Ecdysozoa
Cladus: Panarthropoda
Phylum: Arthropoda
Subphylum: Chelicerata
Classis: Arachnida
Ordo: Araneae
Subordo: Opisthothelae
Infraordo: Araneomorphae
Taxon: Neocribellatae
Series: Haplogynae
Superfamilia: Scytodoidea

Familia: Periegopidae
Genus: Periegops
Species (3): P. australia – P. keani – P. suterii
In synonymy (1): P. hirsutus
Name

Periegops Simon, 1893
Type species: Periegops hirsutus Simon, 1893 [=Segestria suterii Urquhart, 1892]

References
Primary references

Simon, E.L. 1893: Histoire naturelle das araignées. Paris Vol. 1: 257-488. Reference page. [first availability, see p. 267]

Periegops is a genus of spiders with six eyes instead of the usual eight.[1] It is the only genus in its family (Periegopidae) and has three described species.[2] It was long considered to be a member of Sicariidae or Segestriidae until Raymond Forster elevated it to the family level in 1995.[3]
Taxonomy

Periegops was first described in 1893 by Eugene Simon from a specimen of P. hirsutus (a synonym of P. suterii).[4]
Description

This genus of spider has only six eyes, as opposed to eight, which is typical for spiders. Body length varies from 5.9 mm to 109 mm depending on species and sex. Carapace is an orange colour and is darker on the anterior side. Abdomen is brown or creamy brown and usually have a chevron pattern. The family can be distinguished by the pattern of eye positions, which are in three clusters of two eyes.[5]
Species

As of April 2019, the World Spider Catalog accepted the following species:[2]

Periegops australia Forster, 1995 — Australia (Queensland)
Periegops keani Vink, Dupérré & Malumbres-Olarte, 2013 — New Zealand (North Island)[5]
Periegops suterii (Urquhart, 1892) — New Zealand (South Island)

Habitat

Periegops occur in forest habitat, where there are deep leaf litter layers and well drained soil.[5]
Behaviour

No Periegops species has been observed creating webs for prey capture, but rather has been observed using silk to create drag lines and silk retreats. Periegops are likely all fast moving, nocturnal hunters.[5]

In P. suterii, females have been found with two to three males with them, which may imply that the female has a way of attracting males to them.[5]
References

Simon, E. (1893). Histoire naturelle das araignées. doi:10.5962/bhl.title.51973.
"Family: Periegopidae Simon, 1893". World Spider Catalog. Natural History Museum Bern. Retrieved 2019-04-23.
Forster, R. R. (1995). "The Australian spider family Periegopidae Simon, 1893 (Araneae: Sicarioidea)". Records of the Western Australian Museum Supplement. 52: 91–105.
Simon, E. (1893a). Histoire naturelle das araignées. Paris 1, 257-488. doi:10.5962/bhl.title.51973
Vink, C.J.; Dupérré, N.; Malumbres-Olarte, J. (2013). "Periegopidae (Arachnida: Araneae)". Fauna of New Zealand. 70: 15. Archived from the original on 2020-07-14. Retrieved 2013-03-21.

Additional references

Forster, R.R. 1995: The Australasian spider family Periegopidae Simon, 1893 (Araneae: Sicarioidea). Records of the Western Australian Museum, supplement, (52): 91–105. Reference page.
Labarque, F.M. & Ramírez, M.J. 2012. The placement of the spider genus Periegops and the phylogeny of Scytodoidea (Araneae: Araneomorphae). Zootaxa 3312: 1–44. Preview Reference page.
Vink, C.J., Dupérré, N. & Malumbres-Olarte, J. 2013. Periegopidae (Arachnida: Araneae). Fauna of New Zealand, (70) Extract and PDF Reference page.