Tubiclavoides striatum gen. nov et sp nov (Cnidaria : Hydrozoa) a new bathyal hydroid from the Gulf of Cadiz, north-east Atlantic Ocean

Abstract

Tubiclavoides striatum, a new species of an athecate hydroid, was found on mud volcanoes, inactive carbonate clumneys, and cold-water coral stands in the Gulf of Cadiz (south-western Iberian Peninsula, Atlantic Ocean). The new family Tubiclavoididae and the new genus Tubiclavoides are proposed to accommodate the new species. The new hydroid is characterized by scattered filiform tentacles, sporosacs developing among the tentacles and hydrocauli covered with striated perisarc, often subdivided into imbricating cones. A full description and illustrations are provided, as well as some notes on the ecology and distribution of the new species.