Ogata, K. 1985. A generic synopsis of the poneroid complex in Japan. [Abstract.] [In Japanese.]. Ari 13:3-4.

Ogata, K. 1986. Note on the ant fauna of Kyushu, Japan, with reference to the species-area relationship and species composition in different habitats. [Abstract.] [In Japanese.]. Ari 14:3.

Ogata, K. 1987a. A generic synopsis of the poneroid complex of the family Formicidae in Japan (Hymenoptera). Part 1. Subfamilies Ponerinae and Cerapachyinae. Esakia 25:97-132. PDF

Ogata, K. 1987b. Taxonomic note on the ant tribe Dacetini in Japan. [Abstract.] [In Japanese.]. Ari 15:3.

Ogata, K. 1990. A new species of the ant genus Epitritus Emery from Japan (Hymenoptera, Formicidae). Esakia Special Issue 1:197-199. PDF

Ogata, K. 1991a. Ants of the genus Myrmecia Fabricius: a review of the species groups and their phylogenetic relationships (Hymenoptera: Formicidae: Myrmeciinae). Systematic Entomology 16:353-381. PDF

Ogata, K. 1991b. A generic synopsis of the poneroid complex of the family Formicidae (Hymenoptera). Part II. Subfamily Myrmicinae. Bulletin of the Institute of Tropical Agriculture Kyushu University 14:61-149. PDF

Ogata, K. 1992a. The ant fauna of the Oriental region: an overview (Hymenoptera, Formicidae). [Abstract.]. P. 52 in: XIX International Congress of Entomology 1992. Living with insects. Proceedings XIX International Congress of Entomology. Abstracts. Beijing, China, June 28 - July 4, 1992. Beijing: China Cultural Center, xi. + 730 pp.

Ogata, K. 1992b. The ant fauna of the Oriental region: an overview (Hymenoptera, Formicidae). Bulletin of the Institute of Tropical Agriculture Kyushu University 15:55-74. PDF

Ogata, K. 1994a. A taxonomic note on the subfamily Leptanillinae. [Abstract.] [In Japanese.]. Ari 17:2-3.

Ogata, K. 1994b. The Oriental chaos: current state and prospect of ant taxonomy in the Oriental region. [Abstract.] [In Japanese.]. Ari 18:36-37.

Ogata, K. 1994c. Ant fauna of the Nansei Islands, Japan. [Abstract.] [In Japanese.]. Ari 18:39.

Ogata, K.; Bolton, B. 1989. A taxonomic note on the ant Monomorium intrudens F. Smith (Hymenoptera, Formicidae). Japanese Journal of Entomology 57:459-460. PDF

Ogata, K.; Hirashima, Y.; Miura, T.; Maeta, Y.; Yano, K.; Ko, J.-H. 1985. Ants collected in pine forests infested by the pine needle gall midge in Korea (Hymenoptera, Formicidae). Esakia 23:159-163.

Ogata, K.; Murai, K.; Yamauchi, K.; Tsuji, K. 1996. Size differentiation of copulatory organs between winged and wingless reproductives in the ant Technomyrmex albipes. Naturwissenschaften 83:331-333.

Ogata, K.; Okido, H. 2002. Taxonomy of the tribe Myrmecinini with special reference to the enigmatic genus Perissomyrmex. [Abstract.]. P. 157 in: Billen, J. P. J. 2002. XIV International Congress of IUSSI. The Golden Jubilee Proceedings. 27 July - 3 August 2002, Hokkaido University, Sapporo, Japan. Sapporo: XIV International Congress of IUSSI, 233 pp.

Ogata, K.; Okido, H. 2007. Revision of the ant genus Perissomyrmex with notes on the phylogeny of the tribe Myrmecinini. Pp. 352-369 in: Snelling, R. R.; Fisher, B. L.; Ward, P. S. (eds.) 2007. Advances in ant systematics (Hymenoptera: Formicidae): homage to E.O. Wilson – 50 years of contributions. Memoirs of the American Entomological Institute 80:690 pp. PDF

Ogata, K.; Onoyama, K. 1998. A revision of the ant genus Smithistruma Brown of Japan, with descriptions of four new species (Hymenoptera: Formicidae). Entomological Science 1:277-287.

Ogata, K.; Onoyama, K.; Terayama, M.; Ugawa, Y.; Kihara, A.; Tsukii, Y.; Kondo, K.; Kubota, M.; Imai, H. T.; Taylor, R. W. 1998. Japanese ant color image database (1): an impact on taxonomic information. [Abstract.]. P. 350 in: Schwarz, M. P.; Hogendoorn, K. (eds.) 1998. Social insects at the turn of the millennium. Proceedings of the XIII International Congress of IUSSI. Adelaide, Australia. 29 December 1998 - 3 January 1999. Adelaide: XIII Congress of IUSSI, 535 pp.

Ogata, K.; Taylor, R. W. 1991. Ants of the genus Myrmecia Fabricius: a preliminary review and key to the named species (Hymenoptera: Formicidae: Myrmeciinae). Journal of Natural History 25:1623-1673. PDF

Ogata, K.; Terayama, M.; Masuko, K. 1995. The ant genus Leptanilla: discovery of the worker-associated male of L. japonica, and a description of a new species from Taiwan (Hymenoptera: Formicidae: Leptanillinae). Systematic Entomology 20:27-34. PDF

Ogata, K.; Touyama, Y.; Choi, B.-M. 1994. Ant fauna of Hiroshima Prefecture, Japan. [In Japanese.]. Ari 18:18-25.

Ohl, M. 2004. The first fossil representative of the wasp genus Dolichurus, with a review of fossil Ampulicidae (Hymenoptera: Apoidea). Journal of the Kansas Entomological Society 77:332-342. PDF

Ohnishi, H.; Imai, H. T.; Yamamoto, M.-T. 2004 ("2003"). Molecular phylogenetic analysis of ant subfamily relationship inferred from rDNA sequences. Genes and Genetic Systems 78:419-425. PDF

Ohta, Y. 1931a. The check-list of ants from Gifu Prefecture, 1. [In Japanese.]. Insect World 35:85-89.

Ohta, Y. 1931b. The check-list of ants from Gifu Prefecture, 2. [In Japanese.]. Insect World 35:115-120.

Ohta, Y. 1935a. A list of Japanese ants. [In Japanese.] [part]. Insect World 39:286-289. PDF

Ohta, Y. 1936a. A list of Japanese ants. [In Japanese.] [part]. Insect World 40:166-169. PDF

Ohta, Y. 1936b. A list of Japanese ants. [In Japanese.] [concl.]. Insect World 40:426-433. PDF

Ohta, Y. 1938a. Five species of ants from Kinkasan, Gifu. [part] [In Japanese.]. Insect World 42:125-129. PDF