Neivamyrmex falcifer

Distribution based on Regional Taxon Lists
Neotropical Region: Bolivia, Brazil, Ecuador, French Guiana, Guyana, Peru, Suriname.

Nomenclature

 * . Eciton falciferum Emery, 1900a: 182, fig. 17 (m.) BOLIVIA.
 * Type-material: holotype male.
 * Type-locality: Bolivia: (no further data) (Staudinger).
 * Type-depository: MSNG.
 * Combination in E. (Acamatus): Emery, 1900a: 187;
 * combination in Neivamyrmex: Borgmeier, 1953: 357.
 * Status as species: Emery, 1910b: 25; Borgmeier, 1955: 357 (redescription); Kempf, 1972a: 154; Watkins, 1976: 21 (in key); Bolton, 1995b: 288; Palacio, 1999: 158 (in key); Bezděčková, et al. 2015: 110; Palacio, 2019: 620.
 * Senior synonym of mesognathum: Borgmeier, 1955: 357; Kempf, 1972a: 154; Bolton, 1995b: 288.
 * Distribution: Bolivia, Brazil, Colombia, Ecuador, French Guiana, Peru, Suriname.
 * mesognathum. Eciton (Acamatus) leptognathum var. mesognathum Santschi, 1920d: 368, fig. 5 (m.) FRENCH GUIANA.
 * Type-material: 2 syntype males.
 * Type-locality: French Guiana: St-Laurent du Maroni (Le Moult).
 * Type-depository: MNHN?
 * [Note: Baroni Urbani, 1977e: 68-71, does not list this taxon as present in NHMB.]
 * Combination in Neivamyrmex: Borgmeier, 1953: 13.
 * Junior synonym of falcifer: Borgmeier, 1955: 357; Kempf, 1972a: 154; Bolton, 1995b: 290.