The knowledge of a large number of Iberian Peninsula Hemiptera such as Cicadomorpha and Fulgoromopha is still fragmentary. Nevertheless, these two groups are especially remarkable because many species are endemic to this region while others are pests and/or vectors of diseases to cultivated plants. Therefore, information on these Hemiptera is important not only for conservation purposes, but also necessary for agricultural pest management. Within Spain, Aragon -located in the northeast of the country- is especially interesting due to the great diversity of habitats, rich flora and the strategic geographic position. For this political re gion, a bibliographic catalogue of Cicadomorpha and Fulgoromopha is here compiled. The results show that 136 species of 12 of the 15 families present in Iberian Peninsula have been reported in Aragon in previous works. Of these species, 17 percent are en demic to Spain and 15 percent were never mentioned in previous catalogues or checklists for the whole Iberian Peninsula. These results although exciting are clearly insufficient if we consider that several hundreds of species should be expected in this area; clearly more work should be done.