Gastroblasta ovale (Mayer, 1900)

Synonyms in the area: Gastroblasta ovalis —Vannucci 1949, 1951a; Migotto et al. 2002; Silveira & Morandini 2011;? Phialidium ovale —Ramírez & Zamponi 1981 [polyp].

Distribution in South America: medusa—Atlantic Ocean, Brazil, from 23°S to 24°S (Vannucci 1949, 1951a; Migotto et al. 2002; Silveira & Morandini 2011).

Remarks: the distribution range provided by Ramírez & Zamponi (1981) is not based on specific records and, therefore, we did not consider that information for this species.

Habitat: in shallow waters (Vannucci 1949).