Solenopsis gayi valid Chile. Neotropic.
Spinola, M. 1851a. Insectos. Orden 7. Himenopteros. Pp. 153-569 in: Gay, C. 1851. Historia fisica y politica de Chile. Zoologia. Tomo 6. Paris: Maulde & Renon, 572 pp.   128974

Solenopsis gayi bruesi obsolete combination Peru. Neotropic.
Creighton, W. S. 1930b. The New World species of the genus Solenopsis (Hymenop. Formicidae). Proceedings of the American Academy of Arts and Sciences 66:39-151.   123905

Solenopsis gayi fazi synonym of Solenopsis gayi Chile. Neotropic.
Santschi, F. 1923c. Solenopsis et autres fourmis néotropicales. Revue Suisse de Zoologie 30:245-273.   128345