), or with spinosad-based organic pesticides. This insect’s secretion cause blistering in predators, and is used to protect its eggs. Cantharidin is a chemical derived from the Blister Beetle. There are some 100 genera and 1,500 species in the family, mostly associated with rotting wood as larvae, though adults are quite common on flowers. (3) Cantharidin is a keratolytic agent made from the blistering beetle. Cantharidin is used medically to remove warts and is collected for this purpose from species of the genera Mylabris and […] Other than that, the blister beetle has four life stages just like other beetles: egg, larvae, pupa, and adult. Blister Beetle Life Cycle. Generally, cantharidin is applied in a provider’s office and then washed off with soap and water at home. There are approximately 2,500 known species worldwide. The other species from the Nemognathinae family, having lengthy maxillae, are found in Australia. Blister beetle adults can be controlled with careful hand-picking (do not squash them! Blister beetles have four larval stages and are known as Hypermetamorphic because of it. The blisters caused by exposure to blister beetles are usually not very serious and blisters will completely clear up in less than a week to 10 days. Specific Species. (4) Blister Beetles belong to the family Meloidae. Mom plunges to death in front of family while taking photo at cliff’s edge in Australia . Eggs – these are laid on soil, under rocks, or on the host plant of the adult. Pest beetles can become problematic in even the most well-maintained organic garden. Topical cantharidin is commonly used to treat molluscum contagiosum. This is where Cantharidin comes in. They are known as ‘Blister beetles’ because they secrete cantharidin, a poisonous chemical causing blistering of the skin and painful swelling. Other local names given to Paederus dermatitis include spider-lick, whiplash dermatitis, and Nairobi fly dermatitis. The beetle, also known as parisopalpus nigronotatus (Boheman), was introduced from Australia in 1931 and has spread across the country north of Nelson. The family Oedemeridae is a cosmopolitan group of beetles commonly known as false blister beetles, though some recent authors have coined the name pollen-feeding beetles. French Chemist Pierre Robiquet discovered this chemical, and its properties, in the early 1700’s. Regular trips between crop rows to scout for them enables effective management and keeps their numbers at a tolerable level. It causes a blister to develop on the bump, which resolves as the blister heals. Toxic blister beetles in contaminated hay kill 14 horses, sicken 100 others on Wisconsin ranch. 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