Cladorhiza SARS 1872

• Main Author: Vacelet, Jean
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2006
• Subjects: Biodiversity; Taxonomy; Animalia; Porifera; Demospongiae; Poecilosclerida; Cladorhizidae; Cladorhiza; White Sea
• Online Access: https://doi.org/10.5281/zenodo.5488241; http://treatment.plazi.org/id/191D4B17FFD7FF800583FDBDFE9CA29F

CLADORHIZA SARS, 1872 Type species : Cladorhiza abyssicola Sars, 1872 (by monotypy). Diagnosis , from Hajdu & Vacelet (2002): Cladorhizidae with anchorate/unguiferate anisochelae. CLADORHIZA SEGONZACI SP. NOV. (FIGS 2, 17F) Type material Holotype : NAUDUR ND 5 (7-1B), 10/12/1993, 17°23.11′S, 113°11.60′W, 2581 m. Muséum National d’Histoire Naturelle, Paris, no. MNHN D JV 79. Paratypes : NAUDUR ND 5 (7-1B), 10/12/1993, 17°23.11′S, 113°11.60′W, 2581 m. Muséum National d’Histoire Naturelle, Paris, no. MNHN D JV 80. Etymology Dedicated to Michel Segonzac who organized the sorting and distribution of the biological specimens from the Ifremer cruises. Locality and habitat East Pacific Rise, north of Easter Island, 10/12/1993, 17°23.11′S, 113°11.60′W, 2581 m on a dead smoker. The sample was collected from the top of the highest chimney (up to 6 m high) of an inactive site, a few metres from some active black smokers with a relatively dense population of the sea anemone Chondrophellia sp. The sponges were attached to the vertical face of the chimney comprising sulfide deposits. The sample fragment also bore the sponge Abyssocladia naudur sp. nov., some hydroids and about 20 specimens of small white sea anemones. Description Eleven specimens or fragments of a small erect sponge, attached to the solid substratum by an enlarged base 2–3 mm in diameter, and forming an unbranched slender spicular axis with numerous lateral processes, arranged at right angles around the entire main axis, more rarely arranged irregularly in two lateral rows. Holotype (Fig. 2A) 32 mm high with a 10-mm-long basal part of the axis devoid of lateral processes. Axis 0.4–0.5 mm in diameter, lateral processes conical, up to 0.9 mm long for 0.3–0.4 mm in diameter at the base. Paratypes (Fig. 2A) smaller, the largest 24 mm high with the same diameter as the holotype, with similar lateral processes up to 4.2 mm maximum length. On specimens observed in situ , axis with an abrupt end and long lateral processes more numerous than on preserved samples. ...