New synonymy, new species, new keys to Neivamyrmex army ants of the United States. Author Snelling, G. C. Author Snelling, R. R. text Memoirs of the American Entomological Institute Editor Snelling, R. R. Editor Fisher, B. L. Editor Ward, P. S. 2007 Advances in ant systematics (Hymenoptera: Formicidae): Homage to E. O. Wilson - 50 years of contributions. 80 459 550 http://atbi.biosci.ohio-state.edu/HymOnline/reference-full.html?id=21290 journal article 21290 Neivamyrmex andrei (Emery) Figure 94, 124 Eciton andrei Emery , 1901: 53 (m). MEXICO (no specific locality) ( MCSN ) . Eciton (Acamatus) andrei : Emery, 1910: 25. Eciton (Acamatus) oslari Wheeler , 1908: 4 15; pl. 26, fig. 8 (m). UNITED STATES, Arizona, Nogales (lost?). Neivamyrmex andrei : Borgmeier, 1953: 7, 19. Borgmeier, 1955: 451 - 453 (m). Watkins, 1976: 24 (m). Watkins, 1982: 213; (m). Watkins, 1985: 484. MacKay & MacKay, 2002: 47. DISTRIBUTION (Map 1) UNITED STATES: New Mexico and Arizona. MEXICO: Colima, Nayarit, Sinaloa and Vera Cruz (Watkins, 1982). SPECIMENS EXAMINED We have 39 United States records of this rather poorly known species. DISCUSSION In addition to the characters cited in the key, N. andrei may be separated from all other known United States species, except N. swainsonii , by the broad front coxae (in all our other species, they are distinctly longer than broad). As noted above, we believe that N. agilis will prove to be the female castes of this species.