Callyspongia Duchassaing & Michelotti, 1864,

Bertolino, Marco, Costa, Gabriele, Reboa, Anna, Bavestrello, Giorgio, Pansini, Maurizio, Betti, Federico, Bo, Marzia & Daneri, Giovanni, 2019, The sponge fauna of the Seno Magdalena and Puyuhuapi Fjord (Chile), with a description of two new species, Zootaxa 4623 (2), pp. 306-320: 313

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Callyspongia Duchassaing & Michelotti, 1864


Genus Callyspongia Duchassaing & Michelotti, 1864 

Callyspongia fusifera ( Thiele, 1905) 

( Fig. 3View FIGURE 3)

Studied material. CILE 92 ( MSNG 60891View Materials), Bouy W (I) (44.566666°S 72.716666°W), Puerto Cisnes (Chile), 30 m depth, on a rocky slope, 2014GoogleMaps 

Description. The sponge has three tubes starting from a small common base (2 cm thick and 1.5 cm across) ( Fig. 3AView FIGURE 3). Two of them are erect, and the third one is bent almost at a right angle. The highest tube is about 6 cm high. The mean diameter is about 1 cm but all the tubes show alternate swellings and narrowings. The surface is smooth and the consistence soft. The colour in life is beige with mauve tinges. Oscules are round, slightly raised, opening on top of the tubes, but also on their side ( Fig. 3AView FIGURE 3).

Skeleton. The ectosome is formed by a network of thin, generally unispiculate fibres forming quadrangular meshes. Erect spicule brushes, supported by the apical part of the choanosomal primary fibres, make the sponge surface hispid ( Fig. 3BView FIGURE 3). The choanosome is a rather regular network of plurispicular spongin fibers forming quadrangular meshes ( Fig. 3CView FIGURE 3). The fibres measure 2 (6.9) 12 μm in diameter, and the meshes 200 (522.7) 800 μm. Most toxas are embedded in the primary fibres, but sparse microscleres are also present.

Spicules. Megascleres: Short and thick oxeas, generally straight or sometimes slightly curved, with pointed or mucronate ends ( Fig. 3DView FIGURE 3),e 52.5 (66.6) 75 x 5 (6.4) 7.5 µm. Microscleres: One category of toxas showing different degrees of folding: from gently curved to deeply bent ( Fig. 3EView FIGURE 3), 40 (46.4) 62.5 x 2 (2.9) 5 µm.

Ecology. Thirty meters depth in an area characterized by detritus slopes and rocky walls.

Remarks. The specimen has been attributed to Callyspongia fusifera  , notwithstanding the presence of toxa microscleres, because a study in progress at the Museu Nacional of Rio de Janeiro on several specimens from Chile, and on Thiele’s holotype has revealed the presence of toxas (Bispo, personal communication). The shape of the oxeas with pointed extremities matches the description of Burton (1940), but differs from that of Desqueyroux- Faúndez (1990) for Easter Island who recorded strongyloid oxeas.












Callyspongia Duchassaing & Michelotti, 1864

Bertolino, Marco, Costa, Gabriele, Reboa, Anna, Bavestrello, Giorgio, Pansini, Maurizio, Betti, Federico, Bo, Marzia & Daneri, Giovanni 2019

Callyspongia fusifera (

Thiele 1905