Cladonema radiatum Dujardin, 1843

Distribution in South America: polyp—Atlantic Ocean, Brazil, from 23°S to 24°S (Migotto 1996; Migotto et al. 2002; Oliveira 2003; Oliveira et al. 2006; Oliveira & Marques 2007, 2011; Shimabukuro 2007; Silveira & Morandini 2011; Cedeño-Posso 2014; Miranda et al. 2015);

medusa—Atlantic Ocean, Brazil, 23.82°S 45.42°W (Migotto 1996; Migotto et al. 2002; Cedeño-Posso, 2014). Habitat: polyp—from 1 to 2.5m depth, on algae and gastropods (Migotto 1996; Oliveira 2003; Oliveira et al. 2006; Oliveira & Marques 2007, 2011; Shimabukuro 2007).