Solenopsis basalis major Forel, 1913:220 Synonymized with Solenopsis major Forel, 1913 by Pacheco & Mackay, 2013Pacheco, J.A. & W.P. Mackay 2013. The systematics and biology of the New World thief ants of the genus Solenopsis (Hymenoptera: Formicidae). The Edwin Mellen Press, Lewiston, New York and Queenston, Ontario. 1-501.:219. - As Solenopsis major: - Pacheco & Mackay, 2013Pacheco, J.A. & W.P. Mackay 2013. The systematics and biology of the New World thief ants of the genus Solenopsis (Hymenoptera: Formicidae). The Edwin Mellen Press, Lewiston, New York and Queenston, Ontario. 1-501. (distribution); AntWeb, 2023AntWeb 2023. Ants. . (distribution).
Solenopsis tenuis delfinoi Forel, 1913:222 Synonymized with Solenopsis major Forel, 1913 by Pacheco & Mackay, 2013Pacheco, J.A. & W.P. Mackay 2013. The systematics and biology of the New World thief ants of the genus Solenopsis (Hymenoptera: Formicidae). The Edwin Mellen Press, Lewiston, New York and Queenston, Ontario. 1-501.:219.
Solenopsis major Théobald, 1937:201 - Pacheco & Mackay, 2013Pacheco, J.A. & W.P. Mackay 2013. The systematics and biology of the New World thief ants of the genus Solenopsis (Hymenoptera: Formicidae). The Edwin Mellen Press, Lewiston, New York and Queenston, Ontario. 1-501.:219 ( listed as synonym of Solenopsis major Forel, 1913).