Suberites carnosus Johnston, 1842

Morozov, Grigori, Sabirov, Rushan Mirzovich & Anisimova, Natalia, 2018, New data on sponges from Svalbard Archipelago with a description of a new species of Halicnemia, Journal of Natural History (J. Nat. Hist.) 52 (7 - 8), pp. 491-507 : 500-501

Suberites carnosus Johnston, 1842

( Figure 6 (a–e))

Halichondria carnosa Johnston 1842, pp. 146–147 , pl. XIII, figs. 7, 8 Hymeniacidon carnosa: Bowerbank 1866, pp. 203–206 ; Bowerbank 1874, pl. XXXVI Suberites carnosus: Hentschel 1929, p. 926

Pseudosuberites carnosus: Koltun 1966, p. 99 , fig. 72, pl. XXXIII, figs. 3, 4

Description

( Figure 6 (a)) Sponge is branching-erect, provided with a stout peduncle. The consistency is moderate elastic and soft. Even surface covered with thin dermal membrane. Small oscula (average 1 for each branch) scattered through the surface and covered with outgrowths of dermal membrane. Colour from beige to dark-brown.

Skeleton

( Figure 6 (b), 6(c)) Main skeleton formed by quite loose longitudinal spicule tracts and single spicules. Near the surface small tylostyles more or less radially arranged, forming spicule-brushes which are supporting dermal membrane.

Spicules

( Figure 6 (d–e)) Tylostyles (occasionally subtylostyles) straight or slightly curved, dimensions: 141.3–414.8–674 (n = 25) × 5.3–8.5– 11.8 µm (n = 25).

Distribution

European waters of Central and North Atlantic, Norwegian Sea (near the coast of Iceland and Norway), south-western and western parts of Barents Sea, west of Spitsbergen, Sea of Japan (Strait of Tartary).

Figures

Figure 6. Sphaerotylus borealis, (a) habitus; (b–g) SEM images of spicules; (b) large style; (b1) details of apices of large style; (c) intermediate styles; (d, e) small styles; (f) details of apices of long style; (g) basal end of spherotyle.