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.