Pliocene-refugia
Guides
Sclerobunus robustus
Sclerobunus robustus is a montane-restricted harvestman species occurring in the southwestern United States. A 2014 taxonomic revision elevated two former subspecies (S. glorietus and S. idahoensis) to full species status. Population genomic research has identified multiple Pliocene-era refugia in the Southern Rocky Mountains and Intermontane Plateau, with genetically distinct clades showing patterns of isolation by distance in continuous mountain habitats and isolation by environment in isolated sky island populations.