Hynobius ikioi is a species of salamander in the family Hynobiidae, endemic to Kyushu in Japan. Physical characteristics Hynobius ikioi is very close to Hynobius amakusaensis and Hynobius osumiensis, both also from Kyushu, but is easily distinguished from them by its uniquely bi-colored dorsum. Taxonomy This species was described in 2017 by Matsui, Nishikawa & Tominanga; it was previously thought to be a population of Hynobius stejnegeri. References ikioi Endemic amphibians of Japan Amphibians described in 2017 Taxa named by Masafumi Matsui Taxa named by Kanto Nishikawa Taxa named by Atsushi Tominaga