Please identify this bug which we fished out dead from our swimming pool. Southern Spain. Our Spanish neighbour said it was a 'gallo cebollero', ie an onion [and garlic] eating bug.
I would say Ergates faber, an large longhorn beetle with length 30-60 mm, but im not sure.
It should in all cases belong to subfamily Prioninae.
Please search on it at internet and see if it looks like yours.