Mycale (Mycale) bouryesnaultae Van Soest, Aryasari & De Voogd 2021

• Main Authors: Schejter, Laura, Cristobo, Javier, Ríos, Pilar
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2024
• Subjects: Biodiversity; Taxonomy; Animalia; Porifera; Demospongiae; Poecilosclerida; Mycalidae; Mycale; Mycale bouryesnaultae; Antarc*; Antarctic; Antarctic Peninsula; Antarctica; South Orkney Islands
• Online Access: https://doi.org/10.5281/zenodo.10562166; http://treatment.plazi.org/id/03D687FDC5078254FF45F88E6BE6BC65

Mycale (Mycale) cf. bouryesnaultae Van Soest, Aryasari & De Voogd, 2021 (Fig 6b–f) Restricted synonymy: Mycale (Mycale) fibrosa Boury-Esnault & van Beveren, 1982. Material examined: 2 specimens collected at stations 5 (SOI; 61°25'S, 42°55'W; 589 m; 3/3/2014; MACN-In 44392; IEO-CSIC Col.) and 14 (SOI; 61°19'S, 43°13'W; 499 m; 13/3/2014; IEO-CSIC Col.). Description: One broken and poorly preserved specimen (station 5) (Figure 6b). The second specimen is more or less tubular (station 14). Both are beige in colour. Megascleres are mycalostyles of 560–680 µm by 10–15 µm. Microscleres are two categories of anisochelae: the specimen recorded at the station 5 presented anisochelae of 30–35 µm and 60–65 µm, and the specimen of station 14, 45–50 µm and 85–90 µm. Sigmas: the specimen recorded at the station 5 presented sigmas of 60–90 µm while in the specimen at the station 14, 250–280 µm (Fig. 6c–f). Remarks: our specimens are in accordance with the general description of M. (M.) bouryesnaultae, and the mycalostyles and anisochelae are in the recorded range for the species. However, sigmas presented some differences in the sizes among both specimens and also with the original description. Considering that the sampled specimens are broken and not well preserved, we decided to keep this identification with caution. Mycale (M.) bouryesnaultae was reported from the Antarctic Peninsula by Desqueyroux-Faúndez (1989) and Goodwin et al. (2019), from the South Shetland Is. by Ríos et al. (2004) and from Kerguelen Is. by Boury-Esnault & van Beveren (1982). Published as part of Schejter, Laura, Cristobo, Javier & Ríos, Pilar, 2024, New records of demosponges (Porifera) from the South Orkney Islands (Antarctica) with a checklist for the region, pp. 401-430 in Zootaxa 5403 (4) on pages 413-414, DOI:10.11646/zootaxa.5403.4.1, http://zenodo.org/record/10562154