added Reviewed
Ortiz, F. J.; Tinaut, A. 1987. Citas nuevas o interesantes de Formícidos (Hym. Formicidae) para Andalucía. Boletín de la Asociación Española de Entomologia 11:31-34. PDF
added Reviewed
Ortiz, F. J.; Tinaut, A. 1988. Formícidos del litoral granadino. Orsis (Organismes i Sistemes) 3:145-163.
added Reviewed
Osgood, W. H. 1914. Dates for Ovis canadensis, Ovis cervina, and Ovis montana. Proceedings of the Biological Society of Washington 27:1-3.

Notes: Provides evidence on the date of publication of Latreille (1804).

added Reviewed
O'Rourke, F. J. 1979. The social Hymenoptera of County Wexford. Proceedings of the Royal Irish Academy. Section B 79:1-14.
added Reviewed
O'Rourke, F. J. 1950a. The distribution and general ecology of the Irish Formicidae. Proceedings of the Royal Irish Academy. Section B 52:383-410.
added Reviewed
O'Rourke, F. J. 1950b. Myrmecological notes from Narvik, northern Norway. Norsk Entomologisk Tidsskrift 8:47-50. PDF
added Reviewed
added Reviewed
added Reviewed
added Reviewed
Onoyama, K.; Terayama, M. 1994. A list of references on Japanese ants. [In Japanese.]. Tokyo: Myrmecological Society of Japan, iii + 50 pp.
added Reviewed
added Reviewed
O'Rourke, F. J. 1945. A further extension of the range of Myrmica schenki, Emery. Entomologist's Record and Journal of Variation 57:85-86. PDF
added Reviewed
Onoyama, K. 1989c. Three ants (Hymenoptera: Formicidae) new to Hokkaido, Japan. Japanese Journal of Entomology 57:604.
added Reviewed
added Reviewed
added Reviewed
added Reviewed
added Reviewed
added Reviewed
added Reviewed
added Reviewed
added Reviewed
added Reviewed
added Reviewed
added Reviewed
added Reviewed
added Reviewed
added Reviewed
Olivier, A. G. 1792. Encyclopédie méthodique. Histoire naturelle. Insectes. Tome 6. (pt. 2). Paris: Panckoucke, pp. 369-704.

Notes: Publication date from Sherborn & Woodward (1906b:577). Ants pp. 469-506.

added Reviewed
Olsen, O. W. 1934. Notes on the North American harvesting ants of the genus Pogonomyrmex Mayr. Bulletin of the Museum of Comparative Zoology 77:493-514. PDF
added Reviewed