Acromyrmex octospinosus

Identification
Median pronotal spines usually present and distinct, occasionally reduced or absent; head tapering behind eyes; head width less than or equal to 1.7 mm.

Distribution based on Regional Taxon Lists
Neotropical Region: Brazil, Cuba, Ecuador, French Guiana, Guadeloupe, Guatemala, Guyana, Honduras, Mexico, Suriname, Trinidad and Tobago, Venezuela.

Nomenclature

 *  octospinosus. Formica octospinosa Reich, 1793: 132 (w.) FRENCH GUIANA. Forel, 1893e: 590 (s.q.m.); Wheeler, G.C. 1949: 674 (l.); Wheeler, G.C. & Wheeler, J. 1986d: 496 (l.). Combination in Atta: Emery, 1892b: 163; in Atta (Acromyrmex): Forel, 1893e: 590; in Acromyrmex: Mann, 1916: 454. Senior synonym of guentheri: Emery, 1894c: 220; of pallida Crawley: Wheeler, W.M. 1937c: 70. See also: Gonçalves, 1961: 157. Current subspecies: nominal plus cubanus, ekchuah, inti.
 * guentheri. Atta (Acromyrmex) guentheri Forel, 1893e: 594 (s.w.q.m.) TRINIDAD. Junior synonym of octospinosus: Emery, 1894c: 220.
 * pallida. Acromyrmex octospinosa var. pallida Crawley, 1921: 92 (s.w.) GUYANA. [Unresolved junior secondary homonym of Oecodoma pallida Smith, above.] Junior synonym of octospinosus: Wheeler, W.M. 1937c: 70.