• [Also described as new, as Camponotus rectangularis rubroniger willowsi Wheeler, 1934g; unavailable (infrasubspecific) name.]
• [Note: Wheeler, 1934g: 223, includes a second minor worker, also from Acapulco (F. Knab).]
• As unavailable (infrasubspecific) name: Kempf, 1972b: 56.
• Subspecies of Camponotus rectangularis: Bolton, 1995b: 130.

Citations

• Bolton, B. 1995b. A new general catalogue of the ants of the world. Cambridge, Mass.: Harvard University Press, 504 pp.
• Kempf, W. W. 1972b. Catálogo abreviado das formigas da região Neotropical. Studia Entomologica 15:3-344. PDF
• Wheeler, W. M. 1933a. The Templeton Crocker Expedition of the California Academy of Sciences, 1932. No. 6. Formicidae of the Templeton Crocker Expedition. Proceedings of the California Academy of Sciences (4)21:57-64.
• Wheeler, W. M. 1934g. Neotropical ants collected by Dr. Elisabeth Skwarra and others. Bulletin of the Museum of Comparative Zoology 77:157-240. PDF