ABSTRACT
Beetles belong to the insect order Coleoptera. This chapter presents information on the medical importance, geographic distribution, biological aspects, and recommended procedures for treatment of blister beetles. Blister beetles are plant-feeding insects that contain a blistering agent in their body fluids. The blistering agent in staphylinids is somewhat different chemically from cantharidin, called pederin, and is actually produced by endosymbiotic bacteria in the beetles. In any event, handling live beetles or having contact with their pulverized bodies may cause blistering. Blisters from exposure to the beetles are generally not serious and will be reabsorbed in a few days if unruptured. Even if the blisters are ruptured, complete clearing normally occurs within 7–10 days. Affected areas should be washed with soap and water and bandaged until the blisters reabsorb. Antibiotic ointments or creams may help prevent secondary infection. Good sanitation is the best way to prevent ingestion of beetles or their body parts.
