Ho JSWardle WJBulletin of Marine Science2010-02-152010-02-151992 Julhttp://hdl.handle.net/1969.3/2352337-44Pholadicola intestinalis is described based on specimens taken from the intestine of the deep-burrowing pholad clam, Cyrtopleura costata (Linne, 1758), collected in the Galveston Bay Estuary, Texas. The new form is closely affiliated with Leptinogaster; however, it can be distinguished from this and other genera of Clausidiidae by having (1) a modified body, (2) both caudal ramus and leg 5 modified into a fleshy process, (3) a ventrally located attachment area for the egg sac, (4) the absence of the maxilliped in the female (represented by a small sclerite) and (5) structurally reduced spines and setae on all legs. This is the first record of a clausidiid copepod living as an internal parasitePHYLOGENETIC ANALYSISJournal