Biogeographical evidence for common vicariance and rare dispersal in a southern Appalachian harvestman (Sabaconidae, Sabacon cavicolens)

Abstract Aim Species or higher taxa that are obviously dispersal‐limited, but which occupy large geographical distributions, represent a biogeographical paradox. Dispersal must have happened, likely under special and infrequent environmental conditions, but details have been lost to history. The overarching goal of our research is to understand the details of a ‘common vicariance, rare dispersal’ biogeographical history in a widespread but habitat‐specialized harvestman species ( Sabacon cavicolens ) with a southern Appalachian centre of distribution. Location Eastern North America, southern A... Mehr ...