Usofila

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: Leptonetoidea

Familia: Telemidae
Genus: Usofila
Species (4): U. flava – U. gracilis – U. oregona – U. pacifica
Name

Usofila Keyserling in Marx, 1891
Original status: valid genus
Gender: feminine
Type species: Usofila gracilis Keyserling in Marx, 1891
Fixation: monotypy

References

Chamberlin, R.V.; Ivie, W. 1942: A hundred new species of American spiders. Bulletin of the University of Utah (biological series), 7(1): 1–117. [not seen]
Marx, G. 1891: A contribution to the knowledge of North American spiders. Proceedings of the Entomological Society of Washington, 2(1): 28–37. BHL

Links

ION
Nomenclator Zoologicus
EoL

Usofila is a genus of American long-legged cave spiders that was first described by Eugen von Keyserling in 1891.[2] Originally placed with the Ochyroceratidae, it was transferred to the Telemidae in 1973.[3]
Species

As of September 2019 it contains four species, found in the United States:[1]

Usofila flava Chamberlin & Ivie, 1942 – USA
Usofila gracilis Keyserling, 1891 (type) – USA
Usofila oregona Chamberlin & Ivie, 1942 – USA
Usofila pacifica (Banks, 1894) – USA

Formerly included

Usofila pecki Brignoli, 1980 = Telemofila pecki