First record of the slug species Semperula wallacei (Issel, 1874) (Gastropoda: Eupulmonata: Veronicellidae) in Japan.
In this study, we focus on veronicellid slugs in the Ryukyu and Ogasawara Islands of Japan. We conducted phylogenetic analyses of these slugs, incorporating GenBank data from several veronicellid species. A molecular phylogeny based on the mitochondrial COI gene revealed that three clades inhabit these islands. We report here the first record of Semperula wallacei in Japan, which represents an introduced species in this region.