changed
changed
Guérin-Méneville, F. E. 1857. Animaux articulés à pieds articulés. In: Sagra, R. de 1857. la. Histoire physique, politique et naturelle de l'ile de Cuba. [Tome VII.]. Paris: Arthus Bertrand, lxxxvii + 868 pp.

Notes: Also published in a Spanish edition in the same year; see Aguayo (1946). Ants pp. 755-758 (four species recorded).

changed
Gregg, R. E. 1964. Distribution of the ant genus Formica in the mountains of Colorado. Leaflet. University of Colorado Museum 13:59-69.
changed
Gregg, R. E. 1974. William Steel Creighton - An appreciation. Journal of the New York Entomological Society 82:67-75.
changed
changed
Gregg, R. E. 1969a. Geographic distribution of the ant genus Formica (Hymenoptera: Formicidae). Proceedings of the Entomological Society of Washington 71:38-49. PDF
changed
Gregg, R. E. 1972b. The northward distribution of ants in North America. Canadian Entomologist 104:1073-1091. PDF
changed
changed
changed
changed
changed
changed
changed
changed
changed
changed
changed
changed
changed
changed
changed
changed
changed
changed
changed
changed
changed
changed
changed