Byrrhidae, the pill beetles, is a family of beetles in the superfamily Byrrhoidea. These beetles are common in the forests of the Northern Hemisphere. They feed mainly on moss. Populations increase after wildfires. There are about 450 species in this family. Genera include: \n* Amphycyrta \n* Arctobyrrhus \n* Byrrhus \n* Chaetophora \n* Curimopsis \n* Cytilus \n* Eusomalia \n* Exomella \n* Lioligus \n* Lioon \n* Listemus \n* Morychus \n* Porcinolus \n* Sierraclava \n* Simplocaria