Hoch, HanneloreSendra, AlbertoMontagud, SergioTeruel, SantiagoFerreira, Rodrigo Lopes2022-05-092022-05-092021-01-11https://doi.org/10.3897/subtbiol.37.60483https://bdc.icmbio.gov.br/handle/cecav/1375A new obligately cavernicolous species in the planthopper family Kinnaridae is described from Spain. This is the first record of a cavernicolous kinnarid from the Old World, and the first record of a troglobitic fulgoromorphan hemipteran from mainland Spain, and also the 7th cavernicolous kinnarid species worldwide. Epigean Kinnaridae are not known from the present-day fauna of the Iberian Peninsula nor from Western Europe at large. The new species is regarded as a relict from an ancient fauna which is now extinct. The new cavernicolous species could not be assigned to any of the existing genera, thus a new genus is established. Molecular data (COI barcode sequence) for the new species are presented. For the first time, a detailed description of the nymphal morphology of a kinnarid is provided. Information on its ecology, behaviour, distribution and conservation status is given, and biogeographic implications are discussed.enCavesConservationIberian PeninsulaMorphologyTaxonomyTroglobiteTroglomorphyArtigo