First records of Cotylea (Polycladida, Platyhelminthes) for the Atlantic coast of the Iberian Peninsula Author Norena, Carolina Author Marquina, Daniel Author Perez, Jacinto Author Almon, Bruno text ZooKeys 2014 404 1 22 http://dx.doi.org/10.3897/zookeys.404.7122 journal article http://dx.doi.org/10.3897/zookeys.404.7122 1313-2970-404-1 D73FC0CAE82441CDA18C553BE2471DFE Prostheceraeus roseus Lang, 1884 Figure 7A, B Remarks. Prostheceraeus roseus belongs to the family Euryleptidae and is characterized by the following: an elongated, oval body shape and smooth surface; conspicuous marginal tentacles; cerebral eye clusters in two small, parallel rows that do not anastomose. This species is readily recognizable by its distinct pink to purple pigmentation with white longitudinal stripes and a white edge that runs along the entire body margin. The tubular, bell-shaped pharynx oriented frontally, and the digestive system well developed with numerous, anastomosing branches. The reproductive system shows the characteristics of the genus: male copulatory apparatus frontally oriented; penis armed with tubular pointed stylet and female complex with multiple uterine vesicles. Figure 7. Species photographed but not collected. A, B Prostheceraeus roseus C Stylostomum ellipse D, E Oligocladus sanguinolentus F, G Thysanozoon brocchii . Distribution. Prostheceraeus roseus was one of the first species collected during this study, first in summer of 2010, then in autumn of 2013 (14/05/2010 and 10/10/2013). Two specimens were captured in the mouth of the Ria de Arosa in Corrubedo: one on a rocky wall in "Canteiro" , at a depth of 27 metres (42° 30.5540N , 009° 05.1260W ), and the other on Pycnoclavella producta ( Ascidiacea ) in "A Dianteira", at a depth of 23 metres (42° 30.9100N , 009° 04.3750W ). Prostheceraeus roseus is also known from the Gulf of Naples, Italy ( Lang 1884 ). These findings represent the first record for the Atlantic coast outside the Mediterranean Sea.