| Usofila | |
|---|---|
 | |
| female U. flava | |
 | |
| U. pacifica | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Subphylum: | Chelicerata |
| Class: | Arachnida |
| Order: | Araneae |
| Infraorder: | Araneomorphae |
| Family: | Telemidae |
| Genus: | Usofila Keyserling, 1891 |
| Type species | |
| U. gracilis Keyserling, 1891 | |
| Species | |
|
4, see text | |
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.
All species are found in the United States, with U. pacifica extending to Canada and Alaska.
