SECRETION expelled from SIDES OF BODIES contain TOXIN OF BENZOQUINONE DERIVATIVES - COMPLEX SUBSTANCES such as IODINE & HYDROCYANIC ACID; PRODUCES HYDROGEN CYANIDE because they have HYDROCYANIC ACID - SPRAY VENOM as DEFENSE MECHANISM. - Cause BURNING or PRICKLING SENSATION and DEVELOPMENT of YELLOWISH OR BROWN-PURPLE LESION; Blister containing SEROSANGUINOUS FLUID FORMS, may rupture. Eye contact: ACUTE CONJUNCTIVITIS, PERIORBITAL EDEMA, KERATOSIS (benign skin growth), pain; such an injury MUST BE TREATED IMMEDIATELY.