- OLDEST known terrestrial ARTHROPODS - They are called SCORPIONITE because they emerges at night - Ambush/ Attack other arthropods at night, even small rodents - Capture their target using PINCERS = produce sting = paralyzed = tear them = digest body fluids - Live 2-10 years to 25 years life span Systemic reactions of its toxins when absorbed: WEAKNESS, FEVER, & MUSCLE FASCICULATIONS have been reported Their STINGING is painful and often cause ERYTHEMATOUS LESIONS