On the rare and less known nudibranch Piseinotecus sphaeriferus (Schmekel, 1965) (Gastropoda, Nudibranchia, Piseinotecidae) in the Adriatic Sea

Abstract

     The paper is describing the record of a less known nudibranch Piseinotecus sphaeriferus (Schmekel, 1965) in the port of Koper in November 2012. The specimen was found in the environment of dense epifauna, dominated by polyps of Aurelia aurita. Taking into consideration the available published data on this species we report on the first record of this less known nudibranch species in the Adriatic Sea.