• [Misspelled as watsoni by Chapman & Capco, 1951: 77.]
• Ogata, 1987a: 107 (m.); Onoyama & Yoshimura, 2002: 45 (m.)
• Combination in Proceratium: Brown, 1958g: 248.
• Status as species: Emery, 1909d: 362; Yano, 1910a: 418; Emery, 1911e: 51; Wheeler, 1928d: 98; Azuma, 1950a: 34; Azuma, 1951: 86; Azuma, 1953: 1; Brown, 1958g: 248; Collingwood, 1976a: 300; Azuma, 1977a: 112; Onoyama, 1980a: 196; Morisita et al., 1989: 15; Bolton, 1995b: 367; Kim et al., 1998: 151; Onoyama & Yoshimura, 2002: 43 (redescription); Imai et al., 2003: 217; Baroni Urbani & de Andrade, 2003a: 215 (redescription); Radchenko, 2005b: 132.

Obsolete combinations

• Sysphincta watasei

Citations

• Azuma, M. 1950a. On the myrmecological-fauna of Tomogashima, Kii Prov., with the description of new genus and new species. [In Japanese.]. Hyogo Biology 1:34-37.
• Azuma, M. 1951. On the myrmecological-fauna of Osaka Prefecture, Japan with description of new species (Formicidae, Hymenoptera). [In Japanese and English.]. Hyogo Biology 1:86-90. PDF
• Azuma, M. 1953. On the myrmecological fauna of Mt. Rokko, Hyogo Prefecture. [In Japanese.]. Warera 2:1-7. PDF
• Azuma, M. 1977a. On the myrmecological-fauna of Mt. Rokko, Hyogo, with description of a new species (Formicidae, Hymenoptera). [In Japanese.]. Hyogo Biology 7:112-118. PDF
• Baroni Urbani, C.; de Andrade, M. L. 2003a. The ant genus Proceratium in the extant and fossil record (Hymenoptera: Formicidae). Museo Regionale di Scienze Naturali Monografie (Turin) 36:1-492. PDF
• Bolton, B. 1995b. A new general catalogue of the ants of the world. Cambridge, Mass.: Harvard University Press, 504 pp.
• Brown, W. L., Jr. 1958g. Contributions toward a reclassification of the Formicidae. II. Tribe Ectatommini (Hymenoptera). Bulletin of the Museum of Comparative Zoology 118:173-362. PDF
• Chapman, J. W.; Capco, S. R. 1951. Check list of the ants (Hymenoptera: Formicidae) of Asia. Monographs of the Institute of Science and Technology. Manila 1:1-327. PDF
• Collingwood, C. A. 1976a. Ants (Hymenoptera: Formicidae) from North Korea. Annales Historico-Naturales Musei Nationalis Hungarici 68:295-309. PDF
• Emery, C. 1909d. Beiträge zur Monographie der Formiciden des paläarktischen Faunengebietes. (Hym.) Teil VIII. Deutsche Entomologische Zeitschrift 1909:355-376. PDF
• Emery, C. 1911e. Hymenoptera. Fam. Formicidae. Subfam. Ponerinae. Genera Insectorum 118:1-125. PDF
• 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
• Kim, B.-J.; Kim, J.-H.; Kim, K.-G. 1998. Systematic study of Ponerinae (Hymenoptera: Formicidae) from Korea. Korean Journal of Entomology 28:145-154.
• Morisita, M.; Kubota, M.; Onoyama, K.; Ogata, K.; Terayama, M.; Kondoh, M.; Imai, H. T. 1989. A guide for the identification of Japanese ants. I. Ponerinae, Cerapachyinae, Pseudomyrmecinae, Dorylinae, and Leptanillinae (Hymenoptera: Formicidae). [In Japanese.]. Tokyo: Myrmecological Society of Japan, 42 pp.
• 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
• Onoyama, K. 1980a. An introduction to the ant fauna of Japan, with a check list (Hymenoptera, Formicidae). Kontyû 48:193-212. PDF
• Onoyama, K.; Yoshimura, M. 2002. The ants of the genus Proceratium (Hymenoptera: Formicidae) in Japan. Entomological Science 5:29-49. PDF
• Radchenko, A. 2005b. Monographic revision of the ants (Hymenoptera: Formicidae) of North Korea. Annales Zoologici (Warsaw) 55:127-221. PDF
• Wheeler, W. M. 1906h. The ants of Japan. Bulletin of the American Museum of Natural History 22:301-328. PDF
• Wheeler, W. M. 1928d. Ants collected by Professor F. Silvestri in Japan and Korea. Bollettino del Laboratorio di Zoologia Generale e Agraria della Reale Scuola Superiore d'Agricoltura. Portici 22:96-125. PDF
• Yano, M. 1910a. On the ants of Japan. [In Japanese.]. Dobutsugaku Zasshi (Zoological Magazine) 22:416-425. PDF