Solenopsis (Solenopsis) gayi (Spinola) ^HNS.

Myrmica gayi Spinola ^HNS, 1851, In Gay, Historia Fisica y Politica de Chile, Zoologia, 6:242, worker, [[queen]], [[male]].

Solenopsis gayi var. fazi Santschi ^HNS, 1923, Revue Suisse de Zoologie, 30:261, [[queen]], (New synonymy.)

Santschi merely described the slightly darker, sympatric female form of S. gayi ^HNS as a variety, as is evident from series received from Angol, Chile (D. Bullock).