In this paper we review the 169 species or subspecies of arthropods previously considered endemic to the Sierra Nevada and update their status. To do so, we have reviewed all the existing literature on each taxon, from the original article in which it is described to any other article where its taxonomy and distribution is updated. We have also looked for information on possible endemic species or subspecies that may have been overlooked in the initial list, or that may have been described later.
We considered four categories: 1) endemic, in the strict sense, those known only from the Sierra Nevada massif, 2) subendemic, occurring in one or two massifs or areas in addition to Sierra Nevada, 3) non-endemic, species that were considered endemic but live in three or more massifs or others areas, in addition to Sierra Nevada, and 4) not present, those that were erroneously cited as endemic to this massif but whose distribution does not include, either in the past or at present, Sierra Nevada.
As a result, we have reviewed the status of 198 species and subspecies, of which 147 are endemic in the strict sense, 35 subendemic, 13 non-endemic and 3 not present. We also highlight the presence of 6 genera that are monospecific and exclusive to Sierra Nevada. Also, as a consequence of the extensive bibliographical revision, some of the dates of description or the names of some taxa have been modified. Finally, we highlight some species described from Sierra Nevada but which have not been found since their description, especially the case of the tettigonid Sabaterpia paulinoi (Bolívar, 1877) which we consider as possibly extinct.