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Onoyama, K.; Terayama, M. 1994. A list of references on Japanese ants. [In Japanese.]. Tokyo: Myrmecological Society of Japan, iii + 50 pp.
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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
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Onoyama, K. 1989c. Three ants (Hymenoptera: Formicidae) new to Hokkaido, Japan. Japanese Journal of Entomology 57:604.
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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.

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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
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Okano, K. 1947b. On the ant "suzukikuroyamaari" described by Mr. Teranishi. [In Japanese.]. Igaku Seibutsugaku 11:167-169. PDF

Notes: Not seen. Cited in Okano (1989) and Onoyama & Terayama (1994).

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