A new species is added to the genus Paracatua (Cicadellidae: Cicadellinae) from Colombia, P. decastroi n. sp. We propose additional characters to the description of P. rubrolimbata that complements the definition of the genus and allows outlining a species group named here as rubrolimbata, keeping in mind the similarities of the new species with the type species. This is an attempt to bring a clearer and comprehensive view of the genus considering the attributes shared among the Colombian species. As a result of the analysis we propose here a species group characterized by the following new characters shared by P. decastroi n. sp. and P. rubrolimbata: nearly rectangular foveae laterad of the ocelli; surface of pronotum flanges concave; scutellum bulging dorsally; forewings with rounded whitish spots; female sternum VII wider than long with a median halfmoon shaped depression that bears an apical and bulging cuticle sclerotization.