Blister beetles are beetles of the family Meloidae, so called for their defensive secretion of a blistering agent, cantharidin. About 7,500 species are known worldwide. Many are conspicuous and some are aposematically colored, announcing their toxicity to would-be predators.
Meloe proscarabaeus is a European oil beetle. It lives in meadows, field margins and other warm sites in all but the far north of the continent. It lacks hind wings and the elytra are correspondingly reduced in size.
A planidium is a specialized form of insect larva seen in the first-instar of a few families of insects that have parasitoidal ways of life. They are usually flattened, highly sclerotized (hardened), and quite mobile. The function of the planidial stage is to find a host on which the later larval instars may feed, generally until the insect pupates.
Meloe is a genus of blister beetles commonly referred to as oil beetles. The name derives from their defensive strategy: when threatened by collectors or predators they release oily droplets of hemolymph from their joints. This fluid is bright orange and contains cantharidin, a poisonous chemical compound. Wiping the chemical on skin can cause blistering and painful swelling of the skin. This defensive strategy is not exclusive to this genus; all meloids possess and exude cantharidin upon threat.
Cerocoma is a Palearctic genus of blister beetle, whose biology is poorly known. As in other members of the family, these insects are hypermetamorphic. Larval hosts of few species were described. Imagines show distinct sexual dimorphism in the feeding apparatus and the antennae. All species in this genus have aposematic colouration.
Meloe violaceus, the violet oil beetle, is a species of oil beetle belonging to the family Meloidae subfamily Meloinae.
Hycleus polymorphus is a species of Blister Beetles belonging to the family Meloidae subfamily Meloinae.
Lytta nuttalli, or Nuttall's blister beetle, is a species of North American beetle first described in 1824 by Thomas_Say. The genus Lytta is from a Latin word suggesting madness The specific nuttallii recognizes the contributions of Thomas Nuttall, a contemporary of Say.
Epicauta vittata is a species of beetle in the family Meloidae, the blister beetles. It is native to eastern North America, including eastern Canada and the eastern United States. It is known commonly as the striped blister beetle and the old-fashioned potato beetle. It is known as an agricultural pest.
Berberomeloe is a genus within the tribe Lyttini of the family Meloidae, the oil or blister beetles. It includes two species, the red-striped oil beetle, Berberomeloe majalis, and the less flamboyant Berberomeloe insignis.
Meloe variegatus is a European oil beetle. It is commonly known as the variegated oil beetle. Adult beetles feed on leaves and can be pests of crops, while the larvae are parasitic on solitary bees.
Ceroctis capensis, or spotted blister beetle, is diurnal and endemic to Southern Africa occurring in diverse habitats, and belonging to the Meloidae or Blister beetle family. It secretes a toxic liquid from its leg joints when roughly handled, blistering human skin. This species somewhat resembles Mylabris oculata, a member of the same family.
Stenoria is a genus of blister beetles from the family Meloidae. Their larvae develop as parasitoids and brood parasites of the larvae of solitary bees of the families Megachilidae, Colletidae and Andrenidae. The genus contains more than 50 species They are found in the Palearctic from the Canary Islands east to Afghanistan, Tibet and north western China, and also in southern and eastern Africa.
Stenoria analis, the ivy bee blister beetle, is a species of blister beetle from the family Meloidae which is found in western Europe and North Africa and is a specialist cleptoparasite of the ivy bee larvae. Its occurrence in regions outside of the known range of the ivy bee, for example in North Africa, suggest that it has other hosts.
Meloe americanus, the buttercup oil beetle, is a species of blister beetle in the family Meloidae. It is found in North America.
Meloe franciscanus is a species of blister beetle in the family Meloidae. It is found in the deserts of the southwestern United States. The larvae are parasites of bee larvae, eating them and consuming their provisions.
Apalus bimaculatus, the early blister beetle, is a species of blister beetle from the family Meloidae. It is the type species of the genus Apalus.
Sitaris muralis is a species of blister beetle in the subfamily Nemognathinae in the family Meloidae. It is found in Western Europe. It is a black beetle with buff-orange patches on the front of the elytra. It is a kleptoparasite of digger bees.
Meloetyphlus fuscatus, the blind blister beetle, is a species of blister beetle in the family Meloidae found in Central and South America. They are kleptoparasites of orchid bees and are entirely blind as adults. Unique among meloids, females do not lay their eggs near flowers, but rather within their hosts' nests.
Physomeloe corallifer is a species of blister beetle native to the Iberian Peninsula, it is the only recognised species in the genus Physomeloe.
