This tag should be applied for all species and higher taxa known to occur in the Palearctic Realm as well as for the authors who have worked on this fauna.
The Palearctic realm is the most well-studied in the world.
Its first species of Opiliones described goes back to Linnaeus.
The total described diversity of Opiliones of this realm is 801 species 
- ↑ Kury, AB (2012a) A synopsis of catalogs and checklists of harvestmen (Arachnida, Opiliones). Zootaxa, 3184, 35–58.