The family Munnopsidae is a family of asellote isopoda which is one of the most speciose and frequently collected of the known isopod families. As currently structured it consists of nine subfamilies, 44 genera and about 364 species. The Munnopsidae is frequently the most abundant and diverse isopod family in benthic deep−sea communities and also has a wide distribution in cold waters.

Bathyopsurus nybelini, a member of this family, has been known to consume Sargassum that has fallen to the seabed.

Genera within the family Munnopsidae

The following genera are listed for the Munnopsidae:

Acanthocopinae Acanthocope Beddard, 1885 Bathyopsurinae Bathyopsurus Nordenstam, 1955 Paropsurus Wolff, 1962 Betamorphinae Amuletta Wilson & Thistle, 1985 Betamorpha Hessler & Thistle, 1975 Eurycopinae Baeonectes Wilson, 1982 Belonectes Wilson & Hessler, 1981 Disconectes Wilson & Hessler, 1981 Dubinectes Malyutina & Brandt, 2006 Eurycope G.O. Sars, 1864 Gurjanopsis Malyutina & Brandt, 2007 Microcope Malyutina, 2008 Tytthocope Wilson & Hessler, 1981Ilyarachnae Aspidarachna G.O. Sars, 1897 Bathybadistes Hessler & Thistle, 1975 Echinozone G.O. Sars, 1897 Epikopais Merrin, 2009 Ilyarachna G.O. Sars, 1869 Notopais Hodgson, 1910 Nyctobadistes Merrin, 2011 Pseudarachna G.O. Sars, 1897 Lipomerinae Coperonus Wilson, 1989 Hapsidohedra Wilson, 1989 Lionectes Wilson,1989 Lipomera Tattersall, 1905 Mimocopelates Wilson, 1989 Munneurycope Stephensen, 1912 Munnicope Menzies & George, 1972Munnopsinae Acanthamunnopsis Schultz, 1978 Munnopsis M. Sars, 1861 Munnopsoides Tattersall, 1905 Paramunnopsis Hansen, 1916 Pseudomunnopsis Hansen, 1916 Munnopsurus Richardson, 1912 Storthyngurinae Microprotus Richardson, 1909 Rectisura Malyutina, 2003 Storthyngura Vanhöffen, 1914 Storthyngurella Malyutina, 1999 Sursumura Malyutina, 2003 Vanhoeffenura Malyutina, 2004 Syneurycopinae Bellibos Haugsness & Hessler, 1979 Syneurycope Hansen, 1916