| abstract | A new Copidognathus Trouessart, 1888 species is described, C. leiodermus sp. n., collected from the Great Meteor Seamount, northeastern Atlantic. With its large leg lamellae, triangular processes on trochanters III and IV and slender tarsi III and IV C. leiodermus sp. n. is closely allied to species of the gibbus-group. In contrast to the three species of this group recorded from the North Atlantic, Copidognathus gibbus (Trouessart, 1889), C. majusculus (Trouessart, 1894) and C. remipes (Trouessart, 1894), C. leiodermus sp. n. is much more slender, its dorsal plates are almost smooth, and the first pairs of dorsal setae and gland pores are separated. Copidognathus leiodermus sp. n. shares several characters with C. lineatus Bartsch, 1977 from the Galapagos Islands. The description of the Mediterranean species C. majusculus is supplemented. |