From DriloBASE Taxo
- International Trust for Zoological Nomenclature, 1999. International Code of Zoological Nomenclature (4th edition). Natural History Museum, London, 306 pp.
- Ishizuka, K., 1999. A review of the genus Pheretima s. lat. (Megascolecidae) from Japan. Edaphologia, 62 (1999), pp. 55–80.
- Ishizuka, K., 1999d. New species of the genus Pheretima s. lat. (Annelida, Oligochaeta, Megascolecidae) from Tokyo, Japan - Part III. Species with simple intestinal caeca (I). Bulletin of the National Science Museum, Tokyo, 25: 229–242.
- Ishizuka, K., 2001. Taxonomic study of the genus Pheretima s. lat. (Oligochaeta, Megascolecidae) from Japan. Bull. Seikei Univ., 33 (2001), pp. 1–125.
- Ishizuka, K., Azama, Y., Sasaki, T., 2000. Two new species of the genus Pheretima s. lat. (family Megascolecidae) from the Yambaru district, Okinawa island, Japan. Edaphologia, 65: 89-95.
- Ismail, S.A., 1997. Vermicology, the biology of earthworms. Orient Longman, Hyderabad, 92 pp.
- Ito, M.T., Yasuda, M., Yamada, F., 2011. Earthworm fauna (Annelida: Clitellata) of the Main Campus and Chiyoda Experimental Station of Forestry and Forest Products Research Institute. Bulletin of FFPRI, 10, 4(421): 281-289.
Ishizuka, K. (1999a): A review of the genus Pheretima s. lat. (Megascolecidae) from Japan. Edaphologia 62: 55-80. (Published Feb. 1999). Ishizuka, K. (1999b): New species of the genus Pheretima s. lat. (Annelida, Oligochaeta, Megascolecidae) from Tokyo, Japan – Species with manicate intestinal caeca. Bull. Natn. Sci. Mus., Tokyo 25(1): 33-57. [Published 23 March 1999]. Ishizuka, K. (1999c): New species of the genus Pheretima s. lat. (Annelida, Oligochaeta, Megascolecidae) from Tokyo, Japan – Part II. Species with serrate intestinal caeca. Bull. Natn. Sci. Mus., Tokyo 25(2): 101-122. [Published 22 June 1999]. Ishizuka, K. (1999d): New species of the genus Pheretima s. lat. (Annelida, Oligochaeta, Megascolecidae) from Tokyo, Japan – Part III. Species with simple intestinal caeca (I). Bull. Natn. Sci. Mus. Tokyo 25(4): 229-242. [Published 22 December 1999]. Ishizuka, K. (2000b): New species of the genus Pheretima s. lat. (Annelida, Oligochaeta, Megascolecidae) from Tokyo, Japan – Part IV. Species with simple intestinal caeca (2). Bull. Natn. Sci. Mus., Tokyo 26(1): 13-33. [Published 23 March 2000]. Ishizuka, K. (2000c): An Introduction for Identification of the Megadrile Terrestrial Earthworms of Japan. Seikei-ronsou 38: 53-80. [Published 25 March 2000, mostly in Japanese]. Ishizuka, K. (2000d): Futomimizu. Seikei-ronsou 38: 81-92. [Published 25 March 2000, mostly in Japanese]. Ishizuka, K. (2000e): New species of the genus Pheretima s. lat. (Annelida, Oligochaeta, Megascolecidae) from Tokyo, Japan – Part V. Species with simple intestinal caeca (3). Bull. Natn. Sci. Mus., Tokyo 26(1): 13-33. [Published 22 December 2000]. Ishizuka, K. (2001): Taxonomic Study of the Genus Pheretima s. lat. (Oligochaeta, Megascolecidae) from Japan. Bull. Seikei Univ. 33(3): 1-125. [Published 13 September 2001, partly in English]. Ishizuka, K., Azama, Y. & Sasaki, T. (2000a): Two new species of the genus Pheretima s. lat. (Family Megascolecidae) from the Yambaru District of Okinawa Island, Japan. Edaphologia 65: 89-95. [Cited as “Ishizuka et al. (2000a)” in Ishizuka (2001); published Feb. 2000]. Ishizuka, K., Shishikura, F. & Imajima, M. (2000b): Earthworms (Annelida, Oligochaeta) from the Imperial Palace, Tokyo. Mem. Natn. Sci. Mus., To- kyo 35: 1-18. [Cited as “Ishizuka et al. (2000b)” in Ishizuka (2001); publication date 25 Dec. 2000].