Trachymyrmex genus group. Jamaicensis species group. Neotropics, Neartic.

T. atlanticus (Brazil) new species.

T. haytianus Wheeler & Mann, 1914 (Haiti, Jamaica) new status.

T. isthmicus Santschi, 1931 (Colombia, Costa Rica, Ecuador, Panama).

T. ixyodus (Brazil, Suriname, Venezuela) new species.

T. jamaicensis (André, 1893) (Antilles, USA).

= Atta (T.) sharpii Forel, 1893: Wheeler, 1907 (synonymy). = Atta (T.) maritima Wheeler, 1905: Wheeler, 1907 (synonymy), Mann, 1920 (revived from synonymy) new synonymy.

= T. jamaicensis var. frontalis Santschi, 1925 new synonymy . = T. jamaicensis cubaensis Wheeler, 1937 new synonymy

T. zeteki Weber, 1940 (Costa Rica, Ecuador, Panama).

= T. balboai Weber, 1940: Weber, 1958 (synonymy).