First record of Australatya obscura Han & Klotz, 2015 (Decapoda, Atyidae) from the Ryukyu Islands, Japan

Abstract

Background The freshwater shrimp, Australatya obscura Han & Klotz, has been known only from Taiwan and Panay Island, Philippines. New information An adult A. obscura was collected from a river on Ishigaki Island, Ryukyu Islands, Japan. This is the first record of the species in Japan and the northernmost specimen-supported record to date. The species is suggested as having been transported northwards by the Kuroshio Current.