This is a large superfamily of beetles with more than 30,000 species, more than 1,000 genera and 28 families. In general the superfamily is very heterogeneous with few common morphological characters. One is the structure of the tarsi which have usually 5 segments in the fore and middles legs but only 4 in the hind legs. The current taxonomic delimitation of the group is mainly based on molecular phylogeny.
The following families of Tenebrionoidea (plant/storage pests) have been entered into the system: