They are small (2–6 mm) ovoid, usually dull-coloured beetles, with knobbed antennae.

They feed mainly on decaying vegetable matter, over-ripe fruit, and sap.

These fungi-dependent beetles are found in all across Europe and Siberia and are the biggest nutudulid species known in those areas.

[2] There are a few pest species, like the strawberry sap beetle that infest crops in Brazil between the months of August and February.

[3] Some common sap beetles include: The oldest unambiguous fossils of the family date to the Early Cretaceous, belonging to the genus Crepuraea from the Aptian aged Zaza Formation of Russia.