An acquaintance found some of these on his Aloe and I can't understand what they are. But the "succulent" world is a world of which I know absolutely nothing. I only have a bowl of Echinopsis with a beautiful bloom that lasts the space of an admired smile they gave me. I only have these two photo and, although I know they may not be enough, I try to insert them. I hope someone can help us!
I kept looking and I think I spotted unwanted guests. I really think it's Ricania speculum nymphs. Ricania speculum is one of the most recent alien insects arrived in Italy from Southeast Asia. It looks like a butterfly, but in reality it is closer to cicadas; it belongs, in fact, to the order of the Rhynchota, the same as the cicadas and plant bugs. Thanks anyway! Fulgoromorpha: Ricania speculum (Ricaniidae)