Usofila

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

Species
it contains four species, found in the United States:
 * 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