Palamnaeus

• Commonly called Scorpion, is a poisonous, ovoviviparous arthropod.

• Predaceous carnivores, preying mostly on insect and spiders.

• Body has 3 divisions- Prosoma, Mesosoma and Metasoma.

• Each region is segmented.

• Prosoma is dorsally covered by a ‘Carapace’ and ventrally by sternum.

• Ventral prosoma bears eyes.

• Seize the prey by their pedipals, paralyzing them by injecting venom.

• Respiratory organs – book lung.

• Excretory organs are Malpighian tubules and coxal glands.