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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.
Imai, H. T.; Kubota, M.; Brown, W. L., Jr.; Ihara, M.; Tohari, M.; Pranata, R. I. 1985. Chromosome observations on tropical ants from Indonesia. Annual Report. National Institute of Genetics, Japan 35:46-48. PDF
Imai, H. T.; Satta, Y.; Takahata, N. 2001. Integrative study on chromosome evolution of mammals, ants and wasps based on the minimum interaction theory. Journal of Theoretical Biology 210:475-497.
Imai, H. T.; Taylor, R. W. 1986. The exceptionally low chromosome number n=2 in an Australian bulldog ant Myrmecia piliventris Smith. Annual Report. National Institute of Genetics, Japan 36:59-61. PDF
Imai, H. T.; Taylor, R. W. 1989. Chromosomal polymorphisms involving telomere fusion, centromeric inactivation and centromere shift in the ant Myrmecia (pilosula) n=1. Chromosoma (Berlin) 98:456-460. PDF
Imai, H. T.; Taylor, R. W.; Crosland, M. W. J.; Crozier, R. H. 1988. Modes of spontaneous chromosomal mutation and karyotype evolution in ants with reference to the minimum interaction hypothesis. Japanese Journal of Genetics 63:159-185. PDF
Imai, H. T.; Taylor, R. W.; Crozier, R. H. 1994. Experimental bases for the minimum interaction theory. I. Chromosome evolution in ants of the Myrmecia pilosula species complex (Hymenoptera: Formicidae: Myrmeciinae). Japanese Journal of Genetics 69:137-182. PDF
Imai, H. T.; Taylor, R. W.; Crozier, R. H. 1998. Chromosome evolution of Australian primitive ant Mymecia [sic] and its contribution to cytogenetics. [Abstract.]. P. 223 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.
Imai, H. T.; Taylor, R. W.; Crozier, R. H.; Crosland, M. W. L.; Browning, G. P. 1988. Chromosomal polymorphism in the ant Myrmecia (pilosula) n=1. Annual Report. National Institute of Genetics, Japan 38:82-84.
Imai, H. T.; Taylor, R. W.; Kubota, M.; Ogata, K.; Wada, M. Y. 1991 ("1990"). Notes on the remarkable karyology of the primitive ant Nothomyrmecia macrops, and of the related genus Myrmecia (Hymenoptera: Formicidae). Psyche (Cambridge) 97:133-140. PDF
Imai, H. T.; Yosida, T. H. 1965. Chromosome observation in Japanese ants. Annual Report. National Institute of Genetics, Japan 15:64-66. PDF
Imai, H. T.; Yosida, T. H. 1966a. Chromosomes of male ants Aphaenogaster osimensis produced by parthenogenesis of workers. Annual Report. National Institute of Genetics, Japan 16:53-54.
Imai, H. T.; Yosida, T. H. 1966b. Polyploid cells observed in male and queen ants of Aphaenogaster osimensis. Annual Report. National Institute of Genetics, Japan 16:54.
Imanishi, K. 1930. An example of vertical distribution, seen in ants. [In Japanese.]. Kontyû 4:185-187.
Imhoff, L. 1852. Ueber eine Art afrikanischer Ameisen. Bericht über die Verhandlungen der Naturforschenden Gesellschaft in Basel 10:175-177. PDF
Imhoff, L. 1854. On a species of African ant. Annals and Magazine of Natural History (2)13:75-76. PDF

Notes: Partial translation of Imhoff (1852).