Nomenclature
original description
Michaelsen, W. (1922). Ascidiae Ptychobranchiae und Diktyobranchiae von Neuseeland und den Chatham Inseln. <em>Vid. Meddel. Dansk Nat. Foren.</em> 73: 259-498. [details] 
basis of record
van der Land, J. (ed). (2008). UNESCO-IOC Register of Marine Organisms (URMO). , available online at http://www.marinespecies.org/urmo/ [details]
Other
From editor or global species database
Genetic nomenclature abbreviation Pytypi [details]