Efferia latruncula Williston, 1885
| Robberflies of the genus Erax J S Hine (1919) Ann. Ent. Soc. Am 12: 103-154 | |
| Expedition of the California Academy of Sciences to the Gulf of California in 1921. Diptera from the Islands and adjacent shores of the Gulf of California Frank R Cole (1923) Proceedings of the California Academy of Sciences 12: 457-481 |