Anatomy and Systematic Position of Yayoiacmea, a New Genus for Japanese Tiny Limpet "Collisella" oyamai Habe, 1955 (Gastropoda : Lottiidae)

Abstract

The investigations on shell and anatomical characters on "Collisella" oyamai Habe, 1955 revealed that it should be placed in the subfamily Patelloidinae of the Lottiidae and need a new genus, Yayoiacmea. Of systematic characters of the new genus, the radula teeth morphology is unique among the known members of the family.