Microxina charcoti Topsent, 1916

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 : 420

Microxina charcoti Topsent, 1916

( Fig. 10d–f )

Material examined: 3 specimens collected in station 6 ( SOI; 61°25'S, 44°37'W; 290 m; 3/3/2014; MACN-In 44387; collected by Laura Schejter) .

Description: Tubular and ramified specimens, with hairy appearence and with a conulose surface, beige in colour ( Figure 10d ). Spicules are straight oxeas with sharp ends of 570–710 µm by 25–30 µm and microxeas of 50–65 µm ( Figure 10e, f ).

Remarks: As far as we know, this species has been only recorded by Topsent (1916, 1917) and Burton (1929). This represents a new record for the SOI.

Figures

FIGURE 10. a–c. Microxina benedeni, a. general morphology, scale: 2,5 cm, b. oxea, scale: 160 µm, c. sigma, scale: 40 µm; d-f. Microxina charcoti, d. general morphology, scale: 5,5 cm, e. oxea, scale: 260 µm, f. microxea, scale: 25 µm.