Streptocaulus multiseptatus ( Bale, 1915 )

Gil, Marta, Ramil, Fran & Agís, José Ansín, 2020, Hydroids (Cnidaria, Hydrozoa) from Mauritanian Coral Mounds, Zootaxa 4878 (3), pp. 412-466 : 432

Streptocaulus multiseptatus ( Bale, 1915)

Cladocarpia multisepatus Bale, 1915: 304–306, pl. 47 figs. 1–5.

Cladocarpus multiseptatus: Alvarez Claudio, 1993: 221–224 , fig. 38, Lam. XX; Álvarez Claudio, 1995: 13–14, fig. 2.1; Bouillon et al., 2004: 124, fig. 65K.

Cladocarpus cf. multiseptatus: Ramil & Vervoort, 1992: 109–111 , fig. 27a.

Streptocaulus multiseptatus: Ramil & Vervoort, 2008: 417–421 , figs. 1–2.

Material examined. MAURIT-0911, stn MUDR06 , 17º40´22”N, 16º40´11”W, 435 m, 10-XII-2009: four colonies, without phylactocarps .

Biology. Colonies of S. multiseptatus with phylactocarps and gonothecae have been found only in November ( Ramil & Vervoort 2008).

Our material was found on the cold-water coral mound barrier.

Distribution. This species is known from Australia, Bay of Biscay, Alboran Sea and the Sahara coast; its bathymetric distribution ranges from 135 to 576 m ( Ramil & Vervoort 2008). In West Africa, S. multiseptatus was reported in Western Sahara ( Ramil & Vervoort 2008) and also in Mauritania ( Gil & Ramil 2017a).

Our material was collected from a depth of 435 m off Nouakchott, representing the southernmost record of the species in the Atlantic Ocean .

Remarks. The material examined by us is consistent with the description of S. multiseptatus given by Ramil & Vervoort (2008) on the basis of material collected off the Sahara coast.