Introduced as "subgenus" under Melanoides but treated as full genus throughout the text. [details]
Shimomatsukuma-mura, Yatsushiro-gun, Kumamoto Prefecture (Kyushu, Japan) [details]
About 1 km south of Hata-reservoir, Katsuki machi, Yahata city, Fukuoka Prefecture (Kyushu, Japan) [details]