H. Kaiser, C. M. Kaiser, and K. Nishikawa, “Bufo praetextatus Boie, 1826 is a nomen dubium: an historical analysis of its original description supports the prevailing usage of Bufo japonicus Temminck & Schlegel, 1838”, Zootaxa, vol. 5792, no. 2, pp. 355–369, Apr. 2026.