Oligocladus sanguinolentus (Quatrefage, 1845) Lang, 1884

Norena, Carolina, Marquina, Daniel, Perez, Jacinto & Almon, Bruno, 2014, First records of Cotylea (Polycladida, Platyhelminthes) for the Atlantic coast of the Iberian Peninsula, ZooKeys 404, pp. 1-22 : 12

Oligocladus sanguinolentus (Quatrefage, 1845) Lang, 1884 Figure 7D, E

Remarks.

Oligocladus sanguinolentus belongs to the family Euryleptidae and is characterized by an elongate body with a translucent appearance, thus making the intestinal contents visible and giving the animal a bloodied appearance. The marginal tentacles are long, narrow and clearly separated. The tentacular eyes scattered at the base of the tentacles; and the cerebral eyes in two elongated, diffuse clusters. The oral pore lies in front of the brain. An anal pore ( Lang 1884) that opens at the dorsal surface was not observed. Male complex with a penis papilla armed with a tubular, pointed stylet. Female apparatus with multiple uterine vesicles.

Distribution.

Two specimens were found: one on stones in the outer breakwater of the Yacht Club Ribeira at a depth of 8 metres (42° 33.7760N, 008° 59.2740W), and the other in "Torre de Abajo" at a depth of 28 metres (42° 32.7150N, 008° 57.0950W).

Oligocladus sanguinolentus is known from the coastal and littoral shores of Saint Malo (France), Isle of Man, Scilly Islands, various sites of Great Britain (United Kingdom), Gibostad (Norway) and Porto Grande de Sao Vicente (Cape Verde archipelago) ( Faubel and Warwick 2005). The only record for the Mediterranean Sea is in the Gulf of Naples (Italy) ( Lang 1884).