Crella (Pytheas) crassa ( Hentschel, 1914 )

Schejter, Laura, Cristobo, Javier & Ríos, Pilar, 2024, New records of demosponges (Porifera) from the South Orkney Islands (Antarctica) with a checklist for the region, Zootaxa 5403 (4), pp. 401-430 : 411

publication ID	https://doi.org/10.11646/zootaxa.5403.4.1
publication LSID	lsid:zoobank.org:pub:C2EAB19C-07CB-4013-9C93-D25259EA2673
DOI	https://doi.org/10.5281/zenodo.10562150
persistent identifier	https://treatment.plazi.org/id/03D687FD-C501-8253-FF45-FBCB6C80B875
treatment provided by	Plazi (2024-01-24 14:04:37, last updated 2024-11-30 02:48:56)
scientific name	Crella (Pytheas) crassa ( Hentschel, 1914 )
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Treatment

Crella (Pytheas) crassa ( Hentschel, 1914) View in CoL

( Fig. 5a–f View FIGURE 5 )

Restricted synonymy: Grayella crassa Hentschel, 1914 , Pytheas crassa ( Hentschel, 1914) .

Material examined: 5 small specimens collected in station 11 ( SOI; 60°53'S, 42°35'W; 487 m; 10/3/2014; MACN-In 44363; IEO-CSIC Col.) GoogleMaps .

Description: Massive to elongate specimens, light beige. Surface areolated ( Figure 5a View FIGURE 5 ). Ectosome is a dense layer of acanthostyles, supported by multispicular fibers in the choanosome ( Figure 5e, f View FIGURE 5 ). Megascleres are strongyles 430–500µm by 10µm, and acanthostyles, some slightly curved, 100–180 µm by 5 µm. Microscleres are arcuate isochelae of 25 µm ( Figure 5 b–d View FIGURE 5 ).

Remarks: This species has been recorded from Antarctic waters by Henstchel (1914), Koltun (1964) and Göcke & Janussen (2013), among others. This is a new record for the SOI.

References

Gocke, C. & Janussen, D. (2013) Demospongiae of ANT XXIV / 2 (SYSTCO I) Expedition - Antarctic Eastern Weddell Sea. Zootaxa, 3692 (1), 28 - 101. https: // doi. org / 10.11646 / zootaxa. 3692.1.5

Hentschel, E. (1914) Monaxone Kieselschwamme und Hornschwamme der Deutschen Sudpolar-Expedition 1901 - 1903. Deutsche Sudpolar-Expedition, 15 (1), 35 - 141, pls. IV - VIII.

Koltun, V. M. (1964) Sponges of the Antarctic. 1 Tetraxonida and Cornacuspongida. In: Pavlovskii, E. P., Andriyashev, A. P. & Ushakov, P. V. (Eds.), Biological Reports of the Soviet Antarctic Expedition (1955 - 1958). Akademiya Nauk SSSR, Moscow- Leningrad, pp. 6 - 133 + 443 - 448.

Figures

FIGURE 5. a–f. Crella (Pytheas) crassa. a, general morphology, scale: 1 cm; b, Strongyle, scale: 110 µm; c, Acanthostyle, scale: 60 µm; d, Isochela, Scale:12.5 µm; e–f, Skeleton, scale: 200 µm; g–i. Isodictya kerguelenensis. g, General morphology, scale: 4 cm; h, isochelae, scale: 8 µm; i, Oxea, scale: 170 µm; j–l. Isodictya verrucosa. j, General morphology, scale: 3 cm; k, Isochela, scale: 12 µm; l, Oxea, scale: 200 µm; m–p. Isodictya lankesteri. m, General morphology, scale: 8.5 cm; n, Canonochela, scale: 30 µm; o, Oxea, scale: 130 µm; p, skeleton, scale: 100 µm.