Cladorhiza iniquidentata, LUNDBECK, 1905

Hestetun, Jon Thomassen, Tompkins-Macdonald, Gabrielle & Rapp, Hans Tore, 2017, A review of carnivorous sponges (Porifera: Cladorhizidae) from the Boreal North Atlantic and Arctic, Zoological Journal of the Linnean Society 181, pp. 1-69 : 30

CLADORHIZA INIQUIDENTATA LUNDBECK, 1905

( FIG. 23)

Original description: Cladorhiza iniquidentata Lundbeck, 1905: 91 .

Type material examined: Holotype: M/S ‘Michael Sars’ 1902 (29 August 1902, 63°13ʹN, 006°32ʹW, 1836 m).

C o m p a r a t i v e m a t e r i a l e x a m i n e d: C l a d o r h i z a methanophila Vacelet & Boury-Esnault, 2002 , ‘Atlantis’ AT 21-02, J633-5.

Diagnosis: Erect Cladorhiza with central axis and side branches covered in a layer of softer tissue with filaments projecting in all directions. Megascleres mycalostyles; microscleres one type of chela with seven teeth in the upper end, 20–29 µm.

Description: Holotype a stem fragment 43 mm long and 1–2 mm wide with four side branches in the same plane, on the same side of the specimen. Side branches up to 8 mm long and possibly damaged. Stem and branches consist of a central core covered in a looser surface layer and carry numerous filaments issuing in all directions. Colour in ethanol white to light beige ( Fig. 23A).

Skeleton : The central skeleton of the stem and branches is composed of bundles of longitudinally arranged mycalostyles. The skeleton of each filament is made up of overlapping mycalostyles, anchored into the main stem.