Leiodidae Temporal range: Tithonian–Recent PreꞒ Ꞓ O S D C P T J K Pg N
Anisotoma humeralis
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Coleoptera
Suborder:	Polyphaga
Infraorder:	Staphyliniformia
Superfamily:	Staphylinoidea
Family:	Leiodidae Fleming, 1821
Subfamilies[1]
Camiarinae Jeannel, 1911 Catopocerinae Hatch, 1927 Cholevinae Kirby, 1837 Coloninae Horn, 1880 Leiodinae Fleming, 1821 Platypsyllinae Ritsema, 1869
Diversity
at least 380 genera

Leiodidae is a family of beetles with around 3800 described species found worldwide. Members of this family are commonly called round fungus beetles due to the globular shape of many species, although some are more elongated in shape. They are generally small or very small beetles (less than 10 mm in length) and many (but not all) species have clubbed antennae.

Members of the family are generally saprophagous or scavengers feeding on carrion or decaying organic matter like dung, or are specialised on feeding on specific types of fungus. Many species have reduced wings, with about half of all described species being flightless.^[2]

The oldest fossil of the family is Mesagyrtoides from Shar-Teg, Mongolia, dating the Late Jurassic (Tithonian). Members of modern subfamilies appear during the Cretaceous, with Cretaceous members of the family being primarily known from Burmese amber.^[3]