From editor or global species database
Type locality General Roca, Rio Negro, Patagonia, Argentina [details]
Type material ST: MLP 9347 (Burckhardt Collection) [illustrated as Hemiaster aff. cristatus Stoliczka by Burckhardt (1901: pl. 1: figs. 5-8)]; whereaboust of second specimen unknown [Hemiaster pullus Stoliczka by Burckhardt (1901: p. 21; pl. 1: figs. 1-4 )] [details]