Acromyrmex ambiguus

Distribution
This taxon was described from Brazil. It is also found in Uruguay, Paraguay and Argentina.

Nomenclature

 *  ambiguus. Atta (Acromyrmex) lundi var. ambigua Emery, 1888c: 358 (w.) BRAZIL. Goni et al., 1983: 365 (k.). Combination in Acromyrmex: Bruch, 1914: 216. Raised to species: Emery, 1905c: 50. Senior synonym of erectus: Gonçalves, 1961: 131.
 * erectus. Acromyrmex ambiguus var. erectus Santschi, 1925a: 384, fig. 2 (w.) BRAZIL. Junior synonym of ambiguus: Gonçalves, 1961: 131.