Isodictya verrucosa

• Main Authors: Schejter, Laura, Cristobo, Javier, Ríos, Pilar
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2024
• Subjects: Biodiversity; Taxonomy; Animalia; Porifera; Demospongiae; Poecilosclerida; Isodictyidae; Isodictya; Isodictya verrucosa; Antarc*; Antarctic; Antarctica; South Orkney Islands
• Online Access: https://doi.org/10.5281/zenodo.10562156; http://treatment.plazi.org/id/03D687FDC5008255FF45F8B36E67BFD1

Isodictya verrucosa (Topsent, 1913) (Fig 5j–l) Restricted synonymy: Homoeodictya verrucosa Topsent, 1913. Material examined: 3 broken specimens collected at stations 2 (SOI; 60°53'S, 44°33'W; 218 m; 20/2/2014; IEO-CSIC Col.) and 10 (SOI; 60°59'S, 46°43'W; 307 m; 5/3/2014; MACN-In 44381). Description: Erect and digitiform, with a hispid surface (Figure 5j). Megascleres are thick straight or slightly curved oxeas 540–780µm/ 10–30µm. Small isochelae of 25–35 µm (Figure 5k–l). Remarks: The type locality of this species is the Burdwood bank, located in a subantarctic region. Other subantarctic records include the northernmost record at the Argentinean shelf-break region (sample labelled as CC-02-03 L64/14, corresponding to 43°26.11’S and 59°47.62’W) (Schejter et al. 2006). It has been also recorded in Antarctic waters by Boury-Esnault & Van Beveren (1982), Burton (1929), Mothes & Lerner (1995), Ríos (2006) and Fernández et al. (2021). Antarctic specimens have larger oxeas, as also reported by Ríos (2006). This is a new record for the SOI. 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 412-413, DOI:10.11646/zootaxa.5403.4.1, http://zenodo.org/record/10562154