Wolcott, G. N. 1936. Insectae Borinquenses. A revised annotated check-list of the insects of Puerto Rico. Journal of Agriculture of the University of Puerto Rico 20:1-627. PDF

Notes: Publication date from Wolcott (1941). Ants pp. 539-556.

Smith, M. R. 1937 ("1936"). The ants of Puerto Rico. Journal of Agriculture of the University of Puerto Rico 20:819-875. PDF

Wolcott, G. N. 1941. A supplement to "Insectae Borinquenses". Journal of Agriculture of the University of Puerto Rico 25:33-158.

Notes: Ants pp. 148-150.

Smith, M. R. 1942d. The relationship of ants and other organisms to certain scale insects on coffee in Puerto Rico. Journal of Agriculture of the University of Puerto Rico 26:21-27. PDF

Ramos, J. A. 1946. The insects of Mona Island (West Indies). Journal of Agriculture of the University of Puerto Rico 30:1-74. PDF

Wolcott, G. N. 1951 ("1948"). The insects of Puerto Rico. Hymenoptera. Journal of Agriculture of the University of Puerto Rico 32:749-975. PDF

Notes: Ants pp. 810-839.