First recorded in the country with 3 specimens collected from Tosa Bay, Kochi Prefecture, using otter trawls in ca. 200 m depth in May and June 2008. Identification supported by colour pattern, morphological characters and molecular data (barcoding gene cytochrome oxidase subunit I (COI) and 16S rRNA). Range extension is probably due to globally increasing sea water temperatures. Most likely occurring from the small Batan Islands, along the Ryukyu Trench and the corresponding Ryukyu Islands from Taiwan north along the south-eastern mainland coast of Japan (Ref. 84150).