Pseudoceros velutinus ( Blanchard, 1847 )

Cuadrado, Daniel, Rodríguez, Jorge, Moro, Leopoldo, Grande, Cristina & Noreña, Carolina, 2021, Polycladida (Platyhelminthes, Rhabditophora) from Cape Verde and related regions of Macaronesia, European Journal of Taxonomy 736, pp. 1-43 : 28-29

Pseudoceros velutinus ( Blanchard, 1847)

Figs 1C , 7D

Proceros velutinus Blanchard, 1847: 273 , pl. 8, fig. 2; pl. 9, fig. 1.

Eurylepta velutina – Diesing 1850: 210; 1862: 548. — Stimpson 1857: 2. — Schmarda 1859: 26. — Diesing 1862: 548.

Pseudoceros velutinus – Lang 1884: 538–539, pl. 5, fig. 4.

Material examined

CAPE VERDE • 1 spec.; São Vicente Island , Baía das Gatas ; 16°54′09.33″ N, 24°54′25.25″ W ( Fig. 1C V 2 ); 5 May 2017; Leopoldo Moro leg.; RCCN .

Distribution

Gulf of Genova, Italy (type locality) ( Blanchard 1847); Suez Canal, Egypt ( Palombi 1928); Rovigno, Croatia ( Vàtova 1928); Canary Islands ( Cuadrado et al. 2017).

New record

Baía das Gatas, S„o Vicente, Cape Verde.

Remarks

Pseudoceros velutinus is known for its velvety black pigmentation, but the coloration varies with transmitted or reflected light. Fig. 7D shows the appearance of P. velutinus with transmitted light.

Figures

Fig. 1. Location of sampling points, distribution of the Macaronesian archipelagos and limitation of regions: Lauri-Macaronesia or Lusitanian Macaronesia (white); Central Macaronesia or Eumacaronesia (bordeaux) and Great Macaronesia (green). Abbreviations:A1 = San Miguel Island, Azores; C1 = Pasito Blanco, Gran Canaria, Canary Islands; C2 = Tenerife, Canary Islands; C3 = Garachico, Tenerife, Canary Islands; C4 = Amarilla Golf, Tenerife, Canary Islands; CV1 = Astillero Mindelo, S„o Vicente Island, Cape Verde; CV2 = Bahía das Gatas, S„o Vicente Island, Cape Verde; CV3 = Calheta Funda, Sal Island, Cape Verde; M1 = Ifni, South Morocco; M2 = Agadir, South Morocco.

Fig. 7. A. Anonymus ruber Cuadrado, Moro & Noreña, 2017 from Cape Verde. B. Cycloporus gabriellae Marcus, 1950 from Cape Verde. C. Prostheceraeus moseley Lang, 1884 from Cape Verde. D. Pseudoceros velutinus (Blanchard, 1847) (transmitted light) from Cape Verde. E. Monobiceros langi Faubel, 1984 from Cape Verde. F. Stylochus pilidium (Götte, 1881) from South Morocco. G. Stylochus pillidium (Götte, 1881) from Azores. H. Stylochus sp. from South Morocco. I. Stylochus neapolitanus (Delle Chiaje, 1841–1844) from Madeira. J. Planocera pellucida (Mertens, 1833) from Canary Islands. K. Discocelis tigrina (Blanchard, 1847) from Canary Islands. L. Gnesioceros sargassicola (Mertens, 1833) from Canary Islands.

Fig. 2. Marcusia alba sp. nov. (MNCN 4.01/2620 to 2683).A. Whole live animal, dorsal view.B. Anterior region with cerebral eyes cluster and pseudotentacles (white arrows). C. Histological section of the male copulatory organ stained with AZAN. D. Histological section of the female copulatory organ stained with AZAN. E. Sagittal reconstruction of the reproduction system. Abbreviations: see Material and methods.