Prenolepis imparis

Distribution based on Regional Taxon Lists
Nearctic Region: United States. Neotropical Region: Mexico.

Nomenclature

 *  imparis. Formica imparis Say, 1836: 287 (q.m.) U.S.A. Wheeler, W.M. 1930b: 16 (w.); Wheeler, G.C. & Wheeler, J. 1953c: 142 (l.); Hauschteck, 1962: 219 (k.). Combination in Prenolepis: Mayr, 1886d: 431. Senior synonym of americana: Emery, 1893i: 635; Dalla Torre, 1893: 178; of wichita: Dalla Torre, 1893: 178; Wheeler, W.M. 1930b: 15; of minuta, pumila, testacea: Creighton, 1950a: 414; of californica: Wheeler, G.C. & Wheeler, J. 1986g: 14. Current subspecies: nominal plus arizonica, colimana, coloradensis, veracruzensis. See also: Wheeler, W.M. 1930b: 16.
 * wichita. Formica (Tapinoma) wichita Buckley, 1866: 169 (w.) U.S.A. Combination in Prenolepis: Mayr, 1886d: 431. Junior synonym of nitens: Mayr, 1886d: 431; of imparis: Dalla Torre, 1893: 178; Wheeler, W.M. 1930b: 15.
 * americana. Prenolepis nitens var. americana Forel, 1891b: 94, pl. 3, fig. 4 (m.) U.S.A. Junior synonym of imparis: Emery, 1893i: 635; Dalla Torre, 1893: 178.
 * minuta. Prenolepis imparis var. minuta Emery, 1893i: 636 (w.m.) U.S.A. Wheeler, W.M. 1930b: 21 (q.). Junior synonym of imparis: Creighton, 1950a: 414.
 * testacea. Prenolepis imparis var. testacea Emery, 1893i: 636 (q.m.) U.S.A. Wheeler, W.M. 1905f: 390 (w.). Junior synonym of imparis: Creighton, 1950a: 414. See also: Wheeler, W.M. 1930b: 20.
 * californica. Prenolepis imparis var. californica Wheeler, W.M. 1930b: 23, fig. 4 (w.q.m.) U.S.A. Subspecies of imparis: Creighton, 1950a: 414. Junior synonym of imparis: Wheeler, G.C. & Wheeler, J. 1986g: 14.
 * pumila. Prenolepis imparis var. pumila Wheeler, W.M. 1930b: 21 (w.m.) U.S.A. Junior synonym of imparis: Creighton, 1950a: 414.

Etymology
Say described this ant from a queen and male in copula. The two sexes were quite different in color hence he named the species imparis.