Unique Characteristics in Different Orders of Arachnids

Spiders (Order Araneae)
Venomous Chelicerae (Fangs): Most spiders have venomous fangs for subduing prey.
Web-Building Abilities: Many spiders produce intricate webs for capturing prey.
2/ Scorpions (Order Scorpiones)
Pincers (Pedipalps): Scorpions have large, powerful pincers for grasping prey.
Stinger: They possess a venomous stinger at the end of their segmented tail for defense and hunting.
3/ Ticks and Mites (Order Acari)
Small and Parasitic: Many ticks and mites are small, parasitic arachnids that feed on the blood of mammals, birds, reptiles, and even other invertebrates.
Disease Vectors: Ticks are known for transmitting diseases such as Lyme disease, Rocky Mountain spotted fever, and other pathogens.
4/ Harvestmen (Order Opiliones)
Fused Body Segments: Unlike spiders, harvestmen have a fused body with no clear separation between the cephalothorax and abdomen.
No Venom Glands or Silk: Harvestmen do not have venom glands or silk-producing abilities.
5/ Pseudoscorpions (Order Pseudoscorpiones)
Tiny Size: Pseudoscorpions are small arachnids resembling scorpions but without a tail or stinger.
Venomous Pedipalps: They use venomous pedipalps to catch prey, which they inject with venom to immobilize.