Spotting

Treehopper

thanks, at least I have somewhere to start

It's some kind of leafhopper nymph. You can see its wingpads, they look pretty developed, so it's probably a later instar. I wish I had some keys or resources about Brazilian insects, but sadly, I do not. Try searching around on google images and other places. It might be tough, the leafhoppers aren't as popular as butterflies or grasshoppers, so they're tougher to identify. But not impossible!

a flea? a small grasshopper? hmmm, interesting. I'm curious to hear Latimeria's take on it when he sees it

then it should be a specific sort of a flea - i bet on that. (no idea which one specifically, though...sry)

Its like small Grasshopper. I find similar insects sit on my shirt while boating at seashore. They are harmless.