Citrus Flatid Planthopper (Metcalfa pruinosa)

I see (and hear) that it is a quite consistent guest in gardens these days. I found its larvae on a Ranunculus alpestris in one of our miniature rock gardens. Later on we realized that all the house's garden was full of jumping larvae, flying parents and disgusting wad-like larvae skins. They have made no damages on our plants as yet, but are rather obnoxious.

You can see here the pictures and description of our friend about this pest, coming from another part of the world.