EN: Blister beetle, DE: Ölkäfer.
They secrete cantharidin, a poisonous chemical causing blistering of the skin and painful swelling. Blister beetles are hypermetamorphic, going through several larval stages, the first of which is typically a mobile triungulin. The larvae are insectivorous, mainly attacking bees.

Remarkable parasitic behavior
Meloe proscarabaeus and Meloe violaceus identification.

Superfamily Tenebrionoidea