Dorylus helvolus valid South Africa. Afrotropic.
Linnaeus, C. 1764. Museum S:ae R:ae M:tis Ludovicae Ulricae Reginae Svecorum, Gothorum, Vandalorumque, &c. In quo animalia rariora, exotica, imprimis. Insecta & Conchilia describuntur & determinantur. Prodromi instar. Holmiae [= Stockholm]: Salvius, 8 + 720 pp.   126906

Dorylus helvolus impressus synonym of Dorylus braunsi Equatorial Guinea. Afrotropic.
Stitz, H. 1910. Westafrikanische Ameisen. I. Mitteilungen aus dem Zoologischen Museum in Berlin 5:125-151.   129021

Dorylus helvolus pretoriae valid South Africa. Afrotropic.
Arnold, G. 1946. New species of African Hymenoptera. No. 6. Occasional Papers of the National Museum of Southern Rhodesia 2:49-97.   122316