Wild Wonders of Europe / Widstrand / Spanish oil beetle (Berberomeloe majalis) or 'The Spanish Fly', in Dehesa forests, Campanarios de Azaiba Nature Reserve, Salamanca Region, Castilla y Leon, Spain

Wild Wonders of Europe / Widstrand / Spanish oil beetle (Berberomeloe majalis) or 'The Spanish Fly', in Dehesa forests on French lavender (Lavandula stoechas) in Campanarios de Azaiba Nature Reserve, Salamanca Region, Castilla y Leon, Sp...

Kerstin Hinze / Spanish fly / Blister Bee (Lytta vesicatoria) Bulgaria

Duncan Usher / Spanish Fly (Lytta vesicatoria) specimens, excretes cantharidin, a highly toxic substance when disturbed, Europe