A marine Diphyllobothrium plerocercoid (cestoda, pseudophyllidea) from blue whiting (micromestius poutasson).

A type of Diphyllobothrium plerocercoid found in blue whiting, Micromestius poutasson, caught near the north edge of the Faeroe Banks, is described. The most dominant characters of these larvae are their typical dorsoventrally flattened body and their fully extruded and "adult"-like scolex. A morphological comparison with perocercoids of D. dendriticum, D. ditremum and D. latum is given.