Hydractinia parvispina Hartlaub, 1905

Distribution in South America: polyp—Pacific Ocean, Chile, from 53.78°S to 55°S (Hartlaub, 1905 p. 518-519; Galea & Schories 2012a p. 25-26); Atlantic Ocean, at the Malvinas (Falkland) Islands (Hartlaub 1905; Jäderholm 1905, 1917; Blanco 1994a; Genzano & Zamponi 1997).

Habitat: polyp—from 4 to 150m depth, on gastropod shells (Hartlaub 1905 p. 518–519; Jäderholm 1905, 1917; Blanco 1994a; Galea & Schories 2012a p. 25–26).