I haven't seen this critter before. But, there are a number all over my citrus tree all of the sudden. They are on both leaves and on small balls (sorry not technical) that should become flowers soon.
Finally have some activity with my long-time dormant orange so I don't want to risk destruction by an unwanted guest.
It's an interesting thing nonetheless. Anyway, I found similar fotos from a Google search. But, people were asking the same questions about what is is it without any reply on other sites.