Amphinema dinema (Perón & Lesueur, 1809)

Synonyms in the area: Stomotoca dinema —Vannucci 1957, 1963 [medusa].

Distribution in South America: polyp—Atlantic Ocean, Brazil, from 7.55°S to 8.68°S, at 20.28°S 40.26°W (Grohmann et al. 1997; Migotto et al. 2002);

medusa—Atlantic Ocean, Brazil to Argentina, at 16.48°S 39°W, from 20°S to 35°S, from 37ºS to 45.91ºS (Vannucci 1957, 1963; Navas-Pereira 1974, 1981; Goy 1979; Ramírez & Zamponi 1980, 1981; Zamponi 1983a; Migotto et al. 2002; Genzano et al. 2008a; Silveira & Morandini 2011; Nogueira Jr. 2012; Gusmão et al. 2015; Nogueira Jr. et al. 2015a).

Habitat: medusa—euryhaline species considered to be highly dispersive (Vannucci 1957, 1963; Navas-Pereira 1974; Zamponi 1983a).