An updated classification of the order Coleoptera is available Open Acces in the following publication:
Bouchard P, Bousquet Y, Davies AE, Cai C (2024) On the nomenclatural status of type genera in Coleoptera (Insecta). ZooKeys 1194: 1–981. https://doi.org/10.3897/zookeys.1194.106440
A list of the suborders, families, subfamilies, and tribes, annotated with bibliographic references starts on page 792 of the downloadable PDF version.
This classification is also available as a Catalogue of Life dataset, which can be browsed by typing “Coleoptera” at this link: https://www.catalogueoflife.
Previous version of the Classification by Lawrence and Newton 1995.