Copepods associated with Ascidian hosts (Tunicata): Intramolgidae and Lichomolgidae, with descriptions of four new genera and 13 new species.

Two new species of the hitherto monotypic family Intramolgidae are described, both are placed in the type genus Intramolgus Marchenkov Boxshall, 1995. Intramolgus heardensis sp. nov. was found in association with Polyzoa opuntia Lesson, 1830, and the host of I. atlantis sp. nov. was Styela chaini Monniot C. Monniot F., 1970. Eleven new species belonging to the family Lichomolgidae are reported. These include four new monotypic genera: Antarctomolgus gen. nov. accommodates A. molgulae gen. et sp. nov. from Molgula pedunculata (Herdman, 1881), Didemnomolgus gen. nov. accommodates D. crenulatus gen. et sp. nov. from Didemnum molle (Herdmann, 1886), Spheromolgus gen. nov. accommodates S. rarus gen. et sp. nov. from Diplosoma simile (Sluiter, 1909), and Alupa gen. nov. accommodates A. geminata gen. et sp. nov. from Leptoclinides madara Tokioka, 1953. The remaining new species are: Debruma deplanata sp. nov. from Ascidia ornata Monniot F. Monniot C., 2001, Lichomolgidium bipartitum sp. nov. from Pyura stolonifera (Heller, 1878), Lichomolgus papuensis sp. nov. from Rhopalaea circula Monniot F. Monniot C., 2001, L. brevicaudatus sp. nov. from an unidentified species of Polycarpa Heller, 1877, L. alatus sp. nov. from Synoicum castellatum Kott, 1992, L. lepidotus sp. nov. from Aplidium altarium (Sluiter, 1909), and Lobomolgus foveolatus sp. nov. from Didemnum molle (Herdmann, 1886). In addition, redescriptions are provided for Henicoxiphium redactum Illg Humes, 1971, Lichomolgidium sardum Kossmann, 1877, Lichomolgus canui Sars, 1917, L. forficula Thorell, 1860, and Zygomolgus dentatus Kim I.H., 2006.