Identification of the polyp stage of three leptomedusa species using DNA barcoding Author Peter Schuchert Author Aino Hosia Author Lucas Leclère text Revue suisse de Zoologie 2017 2017-03-22 124 1 167 182 journal article 31766 10.5281/zenodo.322675 a349db29-8fa8-4aa0-92b8-926bd365e685 0035-418 322675 Genus Ptychogena A. Agassiz, 1865 Ptychogena A. Agassiz, 1865 : 137 , type species Ptychogena lactea A. Agassiz, 1865 by monotypy. in part Stegopoma Levinsen, 1893 : 177 , type species Lafoea plicatilis M. Sars, 1863 ( Totton, 1930 ) . References: Edwards (1973) , Bouillon et al. (2006) .