Hermaeidae
Hermaeidae is a taxonomic family of sacoglossan sea slugs. These are marine opisthobranch gastropod mollusks in the superfamily Plakobranchoidea.
This family has no subfamilies.
Genera
Jensen listed three genera Aplysiopsis, Hermaea and Hermaeopsis A. Costa, 1869, which has been synonymized with * Hermaea.Jensen listed two valid genera in the family Hermaeidae:Aplysiopsis Deshayes, 1839–53Caliphylla A. Costa, 1867Cyerce Bergh, 1870Hermaea Lovèn, 1844 - type *Mourgona Er. Marcus & Ev. Marcus, 1970Polybranchia Pease, 1860Sohgenia Hamatani, 1991
;Genera brought into synonymy:Beccaria Trinchese, 1870: synonym of Caliphylla A. Costa, 1867Branchophyllum Pruvot-Fol, 1947: synonym of Polybranchia Pease, 1860 Hermaeina Trinchese, 1874: synonym of Aplysiopsis Deshayes, 1853Hermaeopsis A. Costa, 1869: synonym of Hermaea Lovén, 1844Jenseneria Ortea & Moro, 2015: synonym of Mourgona Er. Marcus & Ev. Marcus, 1970Lobiancoia Trinchese, 1881: synonym of Cyerce Bergh, 1870Lobifera Pease, 1866: synonym of Polybranchia Pease, 1860 Phyllobranchillus Pruvot-Fol, 1933: synonym of Polybranchia Pease, 1860Phyllobranchopsis Eliot, 1905: synonym of Aplysiopsis Bergh, 1898: synonym of Aplysia Linnaeus, 1767Phyllobranchus Alder & Hancock, 1864: synonym of Polybranchia Pease, 1860 Physopneumon A. Costa, 1864: synonym of Hermaea Lovén, 1844Polybranchea: synonym of Polybranchia Pease, 1860Polybranchus: synonym of Polybranchia Pease, 1860
Other invalid species within family Hermaeidae include:Physopneumon carneum A. Costa, 1862