ScyphacidaeScyphacidae is a family of woodlice in the order Isopoda. It contains 6 genera and about 20 described species in Scyphacidae.GeneraThese six genera belong to the family Scyphacidae:Actaecia Dana, 1853Marioniscus Barnard, 1932Quelpartoniscus Kwon, 1995Scyphacella Smith, 1873Scyphax Dana, 1853Scyphoniscus Chilton, 1901TaxonomyThe genus Scyphoniscus was moved by Schmidt from Scyphacidae to Detonidae, and this combination was reflected in a catalogue by Schmalfuss. However, in a more recent paper the genus was included again in Scyphacidae.