The beetle family Scarabaeidae is made up of about 28 subfamilies containing more than 100 tribes. There are more than 2,500 genera and 35,000 described species in Scarabaeidae.
The following subfamilies and tribes are in accordance with those in Catalog of Life (2023) and Dietz, Ahrens, et al. (2023). The tribe Hopliini is placed as a subfamily in Catalogue of Life, but is listed as a tribe of subfamily Melolonthinae here. The subfamilies Sericinae and Sericoidinae were suggested in Dietz, Ahrens, et al. (2023) and are included in the Catalogue of Life. The subfamily Lichniinae is sometimes considered a tribe, Lichniini.