The Flatinae are a subfamily of planthoppers, erected by Maximilian Spinola in 1839.

[1] Genera have been recorded from all continents except Antarctica: especially in tropical and subtropical regions.

The antennae are small and the second segment is longer and ends in a bulge and a flagellum arises from it.

Of the two sub-families in the Flatidae, the bodies of adult Flatinae are flattened laterally and the tegmina are tent-like (unlike the Flatoidinae, where the body is not laterally compressed and the tegmina are not as tent-like).

[3] Eight tribes are included by Fulgoromorpha Lists on The Web (FLOW)[2] and BioLib:[4] Auth.