An updated diagnosis for Cratomelus is provided, accompanied by a key to the identification of species. Cratomelus armatus is redescribed, including the genital structures, which were unknown until now, being a significant contribution to the morphological differentiation of this taxon of “chevron” crickets, giving additional data that will allow the future to differentiate them from the other anostostomatids of the world.

Astyloplatum luteolum n. gen. et n. sp., is described, as a new monospecific genus from the eastern slope of the Colombian Andes, of the middle and highlands of the departments of Boyacá and Santander. This new taxon is distinguished by its yellowish coloration and the lack of articulated stylli on the male subgenital plate; this character converges with several taxa unrelated to the tribe Gryllacridini in which Astyloplatum n. gen. is placed. The convergence of characters in gryllacridines, diversity, complement of the current classification, and the importance of the phallic complex for the delimitation of genera and species are discussed.