Eurylepta cornuta var. melobesiarum (Schmidtlein, 1880)

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 : 25

Eurylepta cornuta var. melobesiarum (Schmidtlein, 1880)

Figs 1C , 6

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 ); May 2017; Leopoldo Moro leg.; RCCN .

Distribution

Ireland ( Thompson 1845); Norway (M̹ller 1776); northwest France ( Keferstein 1868); United Kingdom ( Gamble 1893).

New record

S„o Vicente Island, Cape Verde.

Description

Body shape oval. Length 0.5 cm. Smooth dorsal surface; background color red-orange, with white dots scattered over the dorsal surface ( Fig. 6 A–C). Ventral sucker in the posterior half of the body ( Fig. 6F ). Small tentacles. Few tentacular eyes distributed frontally and at the base of the tentacles. Cerebral eyes fused in a single elongated oval cluster ( Fig. 6B ). Ruffled pharynx located at the anterior third of the body. Oral pore posterior to the cerebral ganglion.

The reproductive system coincides with the original description, presenting the characteristic fold in front of the female genital pore mentioned by Lang (1884) for some specimens ( Fig. 6 D–F).

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. 6. Eurylepta cornuta var. melobesiarum (Schmidtlein, 1880) (RCCN). A. Whole live animal, dorsal view. B. Anterior region with eyes and tentacles (white arrows). C. Whole live animal, ventral view. D. Histological sagittal section of female copulatory organ. E. Histological sagittal section of male copulatory organ. F. Sagittal reconstruction of reproductive system. Abbreviations: see Material and methods.

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.