Margarella expansa (Sowerby I, 1838)

Rosenfeld, Sebastian, Aldea, Cristian, Mansilla, Andres, Marambio, Johanna & Ojeda, Jaime, 2015, Richness, systematics, and distribution of molluscs associated with the macroalga Gigartina skottsbergii in the Strait of Magellan, Chile: A biogeographic affinity study, ZooKeys 519, pp. 49-100 : 61-62

Margarella expansa (Sowerby I, 1838) Fig. 4K

Material examined.

1 spm (7.5 × 8 mm).

Synonymy.

See Powell (1951).

Remarks.

New information about the biology and distribution of the species was presented by Rosenfeld et al. (2011). They noted that the records made by Strebel (1908) for the South Georgia and South Sandwich Islands and the Antarctic Peninsula and records made by Smith (1902) for eastern Antarctica have not been commented by any other author in later studies. Because of this, these authors consider their Antarctic distribution points as dubious records, manifesting that this species would be restricted to Subantarctic regions.

Distribution.

Magellanic: Strait of Magellan: Buque Quemado ( Aldea and Rosenfeld 2011), Puerto del Hambre ( Sowerby 1838), Capitán Aracena Island ( Rosenfeld et al. 2011), and Carlos III Island ( Aldea et al. 2011a); Ushuaia ( Zelaya 2004), Róbalo Bay ( Rosenfeld et al. 2011), and Orange Bay ( Lamy 1905); Malvinas/Falkland Islands ( Melvill and Standen 1898, Strebel 1905a, Castellanos and Landoni 1989), and Burdwood Bank ( Melvill and Standen 1907). WTSA: Río de la Plata basin ( USNM 2010). SO: Marion and Prince Edward Islands ( Watson 1886, Branch et al. 1991), Kerguelen Islands ( Smith 1879, Watson 1886, Martens and Thiele 1904, Strebel 1905a, Thiele 1912, Lamy 1915, Powell 1957, Cantera and Arnaud 1985), and Crozet Island ( Cantera and Arnaud 1985); probably in South Georgia Island ( Strebel 1908), Antarctic Peninsula ( Strebel 1908), and Cape Adare ( Smith 1902).