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 (1996) listed three genera Aplysiopsis, Hermaea and Hermaeopsis A. Costa, 1869, which has been synonymized with * Hermaea.

Jensen (2007) listed two valid genera in the family Hermaeidae:


 * Aplysiopsis Deshayes, 1839–53
 * Caliphylla A. Costa, 1867
 * Cyerce Bergh, 1870
 * Hermaea Lovèn, 1844 - type *
 * Mourgona Er. Marcus & Ev. Marcus, 1970
 * Polybranchia Pease, 1860
 * Sohgenia Hamatani, 1991
 * Genera brought into synonymy:
 * Beccaria Trinchese, 1870 : synonym of Caliphylla A. Costa, 1867
 * Branchophyllum Pruvot-Fol, 1947 : synonym of Polybranchia Pease, 1860 (invalid: junior objective synonym of Phyllobranchillus, an earlier replacement name by the same author for the same homonym.)
 * Hermaeina Trinchese, 1874 : synonym of Aplysiopsis Deshayes, 1853
 * Hermaeopsis A. Costa, 1869 : synonym of Hermaea Lovén, 1844
 * Jenseneria Ortea & Moro, 2015 : synonym of Mourgona Er. Marcus & Ev. Marcus, 1970
 * Lobiancoia Trinchese, 1881 : synonym of Cyerce Bergh, 1870
 * Lobifera Pease, 1866 : synonym of Polybranchia Pease, 1860 (Unnecessary substitute name for Polybranchia Pease, 1860)
 * Phyllobranchillus Pruvot-Fol, 1933 : synonym of Polybranchia Pease, 1860
 * Phyllobranchopsis Eliot, 1905 : synonym of Aplysiopsis Bergh, 1898 : synonym of Aplysia Linnaeus, 1767
 * Phyllobranchus Alder & Hancock, 1864 : synonym of Polybranchia Pease, 1860 (Invalid: junior homonym of Phyllobranchus Girard, 1851 [Annelida]; Phyllobranchillus and Branchophyllum are replacement names)
 * Physopneumon A. Costa, 1864 : synonym of Hermaea Lovén, 1844
 * Polybranchea: synonym of Polybranchia Pease, 1860
 * Polybranchus: synonym of Polybranchia Pease, 1860

Other invalid species within family Hermaeidae include:
 * Physopneumon carneum A. Costa, 1862