Phileremulus vigilans Cockerell, 1895:9, ♂♀. ♂♀, Las Cruces, N. M., 3800 ft.. - As Neolarra vigilans: - Michener, 1939Michener, C.D. 1939. A revision of the genus Neolarra (Hymenoptera: Nomadidae). Transactions of the American Entomological Society 65 (4):347-362. (distribution); Shanks, 1978Shanks, S.S. 1978. A revision of the cleptoparasitic bee genus Neolarra (Hymenoptera: Anthophoridae). The Wasmann Journal of Biology 35 (2):212-246. (distribution); Rozen, 2000Rozen, J.G. 2000. Pupal descriptions of some cleptoparasitic bees (Apidae), with a preliminary generic key to pupae of cleptoparasitic bees (Apoidea). American Museum Novitates 3289:1-19. (distribution); Esperanza de Pedro, 2021Esperanza de Pedro, D. 2021. . :. (distribution); Nava-Bolaños & Osorio-Olvera, 2022Nava-Bolaños, A. & L. Osorio-Olvera 2022. Estado del arte del conocimiento de biodiversidad de los polinizadores de México. Revista Mexicana de Biodiversidad 93:1-77. (distribution).
Phileremulus nanus Cockerell, 1895:9, ♀. ♀, Santa Fé, N. M., 7,000 ft.. - Michener, 1939Michener, C.D. 1939. A revision of the genus Neolarra (Hymenoptera: Nomadidae). Transactions of the American Entomological Society 65 (4):347-362.:360 ( listed as synonym of Neolarra vigilans (Cockerell, 1895)); Shanks, 1978Shanks, S.S. 1978. A revision of the cleptoparasitic bee genus Neolarra (Hymenoptera: Anthophoridae). The Wasmann Journal of Biology 35 (2):212-246.:241 ( listed as synonym of Neolarra vigilans (Cockerell, 1895)).
Phileremulus mallochi Crawford, 1912:359, Shanks, 1978Shanks, S.S. 1978. A revision of the cleptoparasitic bee genus Neolarra (Hymenoptera: Anthophoridae). The Wasmann Journal of Biology 35 (2):212-246.:243, Holotype (U.S. National Museum of Natural History). Synonymized with Neolarra vigilans (Cockerell, 1895) by Shanks, 1978Shanks, S.S. 1978. A revision of the cleptoparasitic bee genus Neolarra (Hymenoptera: Anthophoridae). The Wasmann Journal of Biology 35 (2):212-246.:241.
Neolarra coloradensis Michener, 1939:361, Shanks, 1978Shanks, S.S. 1978. A revision of the cleptoparasitic bee genus Neolarra (Hymenoptera: Anthophoridae). The Wasmann Journal of Biology 35 (2):212-246.:243, Holotype (California Academy of Sciences). Synonymized with Neolarra vigilans (Cockerell, 1895) by Shanks, 1978Shanks, S.S. 1978. A revision of the cleptoparasitic bee genus Neolarra (Hymenoptera: Anthophoridae). The Wasmann Journal of Biology 35 (2):212-246.:241.