Pseudoceros maximus Lang, 1884 Monobiceros langi Faubel, 1984: 215 Polycladida (Platyhelminthes, Rhabditophora) from Cape Verde and related regions of Macaronesia Cuadrado, Daniel Rodríguez, Jorge Moro, Leopoldo Grande, Cristina Noreña, Carolina European Journal of Taxonomy 2021 2021-02-24 736 1 43 444YD 1921945 Faubel, 1984 Faubel 1984 [600,988,704,731] Turbellaria Pseudocerotidae Monobiceros GBIF Animalia Polycladida 28 29 Platyhelminthes species langi   Figs 1C–D, 7E    Pseudoceros maximus Lang, 1884(in part): 270–271, 543, pl. 30, fig. 17.     Monobiceros langi Faubel, 1984: 215.    Material examined   CAPE VERDE• 1 spec.; São Vicente Island, Baía das Gatas; 16°54′09.33″ N, 24°54′25.24″ W( Fig. 1C V 2);  May 2017; Leopoldo Moreleg.; RCCN.   MOROCCO• 3 specs; Sidi Ifni; 29°22′58.00″ N, 10°10′37.88″O( Fig. 1D M 2);  2 Sep. 2016; Leopoldo Moroleg.; RCCN.    Distribution Gulf of Naples, Italy( Lang 1884); Cádiz, Spain( Bahia et al. 2017); Crete, Greece( Bahia et al.2017).    New records Baía das Gatas, São Vicente Island, Cape Verde. Sidi Ifni, Morocco. These are the first records outside the Mediterranean Sea.   Description Body oval and elongated sometimes pear-shaped, with wavy margins and thickened dorsal midline. Length 2.3 cm. The background color varies with transmitted or reflected light. With reflected light, the dorsal surface is chocolate brown, speckled with white patches. Under transmitted light, the pigmentation looks milky brown with dark margins and a dark dorsal midline that delimited the characteristic bulge ( Fig. 7E). Dorsal surface smooth. Tentacles formed by simple folds and cone-like in shape. Cerebral eyes form a single large rounded cluster behind the tentacles; frontal eyes scattered between the tentacles. Compact ruffled pharynx located directly behind the cerebral eyes. 3042687314 2017-05 RCCN Leopoldo More Cape Verde 16.902592 Sao Vicente Island 1 -24.907011 28 29 1 Sao Vicente 3042687318 2016-09-02 RCCN Leopoldo Moro Morocco 29.382778 Sidi Ifni 1 10.177189 28 29 3