violet oil beetle meloe violaceus sitting on a twig and secreting cantharidin for defense. austria

adult animal animalia antenna austria background beautiful beauty beetle biology biosphere bisamberg black blister blue bug cantaridin cantharidin close closeup coleoptera color defense drops entomology escape flower hiking insect lower macro meloe nature oil outdoor park people pollination purpur recreation secreting sitting springtime twig urban vienna violaceus violet wien wildlife wings woods