original description
Oka, A. (1927). Uber zwei neue Rhopalaea Arten aus Japan. <em>Proc. Imp. Acad.</em> 3: 681-683. [details]
additional source
van der Land, J. (ed). (2008). UNESCO-IOC Register of Marine Organisms (URMO). , available online at http://www.marinespecies.org/urmo/ [details]
From editor or global species database
Genetic nomenclature abbreviation Rhsaga [details]