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.

Members of the family are generally detritivorous or scavengers feeding on carrion or decaying organic matter like dung, or are specialised on feeding on specific types of fungus.

[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.