Idogawa, N.; Dobata, S.; Okada, Y.; Yamane, S. 2025. A new species of Monomorium Mayr, 1855 (Hymenoptera, Formicidae) with a brachypterous queen from southern Japan, and phylogeny of Japanese Monomorium species with diverse reproductive strategies. ZooKeys 1250:49-78. [online early] 10.3897/zookeys.1250.150776 PDF
Idogawa, N.; Yamane, S. 2025. [Untitled. Monomorium brachypterum sp. nov., attributed to N. Idogawa and S. Yamane.]. Pp. 60-68 in: Idogawa, N.; Dobata, S.; Okada, Y.; Yamane, S. 2025. A new species of Monomorium Mayr, 1855 (Hymenoptera, Formicidae) with a brachypterous queen from southern Japan, and phylogeny of Japanese Monomorium species with diverse reproductive strategies. ZooKeys 1250:49-78. [online early]. PDF
Igodawa, N.; Dobata, S. 2018. Colony structure and life history of Lioponera daikoku (Formicidae: Dorylinae). Asian Myrmecology 10:10 pp. e010006. 10.20362/am.010006 PDF
Ihering, H. 1907a. Die Cecropien und ihre Schutzameisen. [part]. Botanische Jahrbücher 39:666-670.
Ihering, H. 1907b. Die Cecropien und ihre Schutzameisen. [concl.]. Botanische Jahrbücher 39:671-714.
Ihering, H. 1912. Biologie und Verbreitung der brasilianischen Arten von Eciton. Entomologische Mitteilungen. Berlin-Dahlem 1:226-235. PDF
Ikeda, M.; des Lauriers, J. 2011. The ant fauna of the Mojave National Preserve. Pp. 104-113 in: Reynolds, R. E. 2011. The incredible shrinking Pliocene, and Abstracts of Proceedings: the 2011 Desert Symposium. Fullerton: California State University Desert Studies Consortium, 136 pp. PDF
Ikehara, S. (ed.) 1974. Ecological studies of nature conservation of the Ryukyu Islands (1). Report for the fiscal year of 1973. [In Japanese.]. Naha, Okinawa: University of the Ryukyus, 278 pp.
Ikehara, S. (ed.) 1976. Ecological studies of nature conservation of the Ryukyu Islands - (II). Naha, Okinawa: University of the Ryukyus, 141 pp.
Ikehara, S. (ed.) 1977. Ecological studies of nature conservation of the Ryukyu Islands - (III). Naha, Okinawa: University of the Ryukyus, 202 pp.
Illiger, K. 1802. Neue Insekten. Magazin für Insektenkunde (Illiger) 1:163-208. PDF
Illiger, K. 1807. Vergleichung der Gattungen der Hautflügler Piezata Fabr. Hymenoptera Linn. Jur. Magazin für Insektenkunde (Illiger) 6:189-199. PDF
Imai, H. T. 1966a. Chromosome observation method of ants by using a squash method. (Part 1.). [In Japanese.]. Ari 3:1-2.
Imai, H. T. 1966b. The chromosome observation techniques of ants and the chromosomes of Formicinae and Myrmicinae. Acta Hymenopterologica 2:119-131. PDF
Imai, H. T. 1966c. Chromosome observation method of ants by using a squash method. (Part 2.). [In Japanese.]. Ari 4:1-2.
Imai, H. T. 1969. Karyological studies of Japanese ants. I. Chromosome evolution and species differentiation in ants. Science Reports of the Tokyo Kyoiku Daigaku. Section B 14:27-46.
Imai, H. T. 1971. Karyological studies of Japanese ants, 2. Species differentiation in Aphaenogaster; with special regard to their morphology, distribution and chromosomes. Mushi 44:137-151. PDF
Imai, H. T. 1974. B-Chromosomes in the myrmicine ant, Leptothorax spinosior. Chromosoma (Berlin) 45:431-444.
Imai, H. T. 1986a. Modes of species differentiation and karyotype alteration in ants and mammals. Annual Report. National Institute of Genetics, Japan 36:58-59.
Imai, H. T. 1997. Identification system of ants by color image database. [In Japanese.]. Nature and Insects (Konchu to Shizen) 32(10):7-11.
Imai, H. T.; Baroni Urbani, C.; Kubota, M. 1984. Karyological and cytotaxonomic studies on the 94 species of Indian ants. [In Japanese.]. Ari 12:2.
Imai, H. T.; Baroni Urbani, C.; Kubota, M.; Sharma, G. P.; Narasimhanna, M. H.; Das, B. C.; Sharma, A. K.; Sharma, A.; Deodikar, G. B.; Vaidya, V. G.; Rajasekarasetty, M. R. 1984. Karyological survey of Indian ants. Japanese Journal of Genetics 59:1-32. PDF
Imai, H. T.; Brown, W. L., Jr.; Kubota, M.; Yong, H.-S.; Tho, Y. P. 1984. Chromosome observations on tropical ants from western Malaysia. II. Annual Report. National Institute of Genetics, Japan 34:66-69. PDF
Imai, H. T.; Crozier, R. H.; Taylor, R. W. 1977. Karyotype evolution in Australian ants. Chromosoma (Berlin) 59:341-393. PDF
Imai, H. T.; Hirai, H.; Satta, Y.; Shiroishi, T.; Yamada, M.; Taylor, R. W. 1992. Phase specific Ag-staining of nucleolar organizer regions (NORs) and kinetochores in the Australian ant Myrmecia croslandi. Japanese Journal of Genetics 67:437-447.
Imai, H. T.; Kihara, A.; Kondoh, M.; Kubota, M.; Kuribayashi, S.; Ogata, K.; Onoyama, K.; Taylor, R. W.; Terayama, M.; Tsukii, Y.; Yoshimura, M.; Ugawa, Y. 2003. Ants of Japan. Tokyo: Gakken, 224 pp. PDF
Imai, H. T.; Kubota, M. 1972. Karyological studies of Japanese ants (Hymenoptera, Formicidae) III. Karyotypes of nine species in Ponerinae, Formicinae and Myrmicinae. Chromosoma (Berlin) 37:193-200. PDF
Imai, H. T.; Kubota, M. 1975. Chromosome polymorphism in the ant Pheidole nodus. Chromosoma (Berlin) 51:391-399. PDF
Imai, H. T.; Kubota, M. 1981. Karyological survey of Indian ants - some preliminary reports. Nucleus (Calcutta) 24:93-96.
Imai, H. T.; Kubota, M. 1989 ("1988"). Collection of ants from Lesser Sunda Islands. [Abstract.] [In Japanese.]. Ari 16:4.