First fossil record of the oribatid family Liacaridae (Acariformes: Gustavioidea) from the lower Albian amber-bearing site of Ariño (eastern Spain)

We describe the first beetle mite (Oribatida) found in lower Albian (Lower Cretaceous) amber-bearing site of Ariño, located Teruel Province (eastern Iberian Peninsula). It represents fossil record family Liacaridae (Acariformes: Oribatida: Gustavioidea). A new species, Liacarus (Procorynetes) shtanchaevae Arillo and Subías sp. nov., is described compared with living species subgenus (Procorynetes). Notes on its biogeography palaeobiology are provided. corresponds to Cretaceous an extant oribatid bears witness wide range distribution that ancient representatives may have had. Most from ambers belong genera, which reflects high degree morphological stasis, or bradytely, over evolutionary history mites since Early Cretaceous.