Revision of genus Idunella Sars with descriptions of new species, l. sketi, n. sp. (Fam. Liljeborgiidae)

Abstract

        A revision of the genus Idunella S a r s is presented, and a new species, I. sketi, n. sp. is described. The genus Listriella B a r n a r d, J. (1959) is merged into genus Idu­nella S a r s as synonym, because of existence of transi­tive species between both genera.

       The genus Sextonia C h e v r e u x 1920, merged by B a r n a r d,  J. (1959) into genus Idunella as synonym, is now reestablished because of characteristic shape of man­dible and rostrum.

       The diagnosis of both genera as well as the diagnosis, synonymy, bibliography and distribution of all 27 known species are provided. The key to the species of genus Idunella is given.