Efferia peralta Wilcox, 1966
| Efferia Coquillett in America North of Mexico (Diptera: Asilidae) J Wilcox (1966) Proceedings of the California Academy of Sciences 34: 85-234 | |
| A quantitative evaluation of intraspecific and interspecific variation in eye morphology for Efferia coquillett (Diptera: Asilidae) species K C Holston and C R Nelson (2006) Proceedings of the Entomological Society of Washington 108: 210-225 |