Tetilla leptoderma Sollas, 1886

Göcke, Christian & Janussen, Dorte, 2013, Demospongiae of ANT XXIV / 2 (SYSTCO I) Expedition — Antarctic Eastern Weddell Sea, Zootaxa 3692 (1), pp. 28-101 : 38

Tetilla leptoderma Sollas, 1886

( Fig. 3 A)

Tetilla leptoderma Sollas, 1886: 179 . Sollas 1888: 3, pl. 1, figs. 1–15. Burton 1929: 418. Koltun 1976: 166. Boury-Esnault and van Beveren (1982): 24–27, figs. 5, 6. Desqueyroux & Moyano 1987: 47. Desqueyroux-Faúndez 1989: 102, pl. 1, figs. 1a– d, pl. 5, figs. 26–28. Sarà et al. 1990: 252. Barthel et al. 1990: 122, 1997: 47. Gutt and Koltun 1995: 230. Cattaneo-Vietti et al. 1999: 540.

Synonymy:

Craniella leptoderma (Sollas, 1886) : Kirkpatrick 1908: 4–6, pl. 11, figs. 4–14. Campos et al. 2007a: 692–694, figs. 21–29, tab. 1.

Tethya stylifera Lendenfeld, 1907: 84 –87, pl. XVI, fig. 5–12.

Tetilla grandis Sollas, 1886: 180 . Sollas 1888: 10, pl. 5, figs. 1, 2, 4–14. Lendenfeld 1903: 20, 1907: 69, pl. 15, figs. 10–18.

Tetilla grandis var. alba Sollas, 1886 . Sollas 1888: 13, pl. 5, fig. 3. Lendenfeld 1903: 21.

Material. 7 specimens from station 048-1 (SMF 11760–11763), 602.1 m, 70° 23.94' S, 8° 19.14' W, 12.01.2008.

Description. Specimens globular, mainly fragmentary sponges with diameters 0.5 to 10 cm. Surface smooth. Very firm. Two specimens encrusting on Haliclona (Gellius) cf. flabelliformis (Ridley & Dendy, 1886) (see Fig. 19 A). Spicules oxeas of up to about 4000 µm in length. Triaenes concentrated in the ectosome, up to 6000 µm long. Sigmaspires 10 to 20 µm length, very abundant within the tissue.

Remarks. The characters of the Tetillidae sampled during SYSTCO I expedition correspond well to the very detailed descriptions by Sollas (1888) and Boury-Esnault and van Beveren (1982). The species is one of the most common sponges on the Antarctic shelf and has a wide distribution area, covering wide areas of the Southern Ocean, including areas in Argentina, Kerguelen and New Zealand (Van Soest et al. 2012a). By attributing the species to the genus Tetilla we follow the World Porifera Database (Van Soest et al. 2012a).

Figures

FIGURE 3. Habitus pictures. A: Tetilla leptoderma Sollas, 1886 (SMF 11760), alive, ex situ, B: Polymastia invaginata Kirkpatrick, 1907 (SMF 11777), alive, ex situ, C: Tentorium semisuberites (Schmidt, 1870) (SMF 11788), alive, ex situ, D: Tentorium papillatum (Kirkpatrick, 1908) (SMF 11787), alive, ex situ, E: Stylocordyla cf. chupachups Uriz, Gili, Orejas & Perez-Porro, 2011 (SMF 11771), in ethanol, F: Iophon unicorne Topsent, 1907 (SMF 11812), in ethanol, G: Raspailia (Hymeraphiopsis) irregularis Hentschel, 1914 (SMF 11806), in ethanol, H: Inflatella belli (Kirkpatrick, 1907) (SMF 11811), in ethanol, I: Lissodendoryx (Ectyodoryx) ramilobosa (Topsent, 1916) (SMF 11808), in ethanol, J: Lissodendoryx (Lissodendoryx) cf. styloderma Hentschel, 1914 (SMF 11826), in ethanol, K: Crella (Pytheas) crassa (Hentschel, 1914) (SMF 11832), in ethanol. Scale bars: A: 30 mm, B: 10, F – K mm, C – E: 5 mm.

FIGURE 19. Haliclona (Gellius) cf. flabelliformis (Ridley & Dendy, 1886), SMF 11858. A, habit in ethanol, on the surface of the sponge grow two small specimens of Tetilla leptoderma (SMF 11763). B, skeletal section. C, oxea. D, sigma. E – F, toxas. Scale bars: A: 10 mm, B: 1 mm, C: 100 µm, D: 5 µm, E – F: 30 µm.