Alex Hyde / Thornbug (Umbonia crassicornis) San Jose, Costa Rica.

MYN / Piotr Naskrecki / Treehopper (Umbonia crassicornis) Costa Rica. meetyourneighbours.net project

John Cancalosi / Three Thorn bugs (Umbonia sp) on twig, Costa Rica

John Cancalosi / Thorn bug (Umbonia sp) guarding young, Costa Rica

John Cancalosi / Two Thornbugs (Umbonia sp) on underside of twig, Costa Rica

John Cancalosi / Two Thorn bugs (Umbonia sp) on twig, Costa Rica,

Piotr Naskrecki / Treehopper (Umbonia crassicornis) mimicking thorn, La Selva Biological Research Station, Heredia, Costa Rica

Pete Oxford / Treehopper (Umbonia sp), Mapari, Rupununi, Guyana

Pete Oxford / Treehopper (Umbonia sp) group, Mapari, Rupununi, Guyana

Murray Cooper / Treehopper (Umbonia sp) female defending eggs against Assassin Bug (Reduviidae) predator, Amazon, Ecuador

Murray Cooper / Treehopper (Umbonia sp) female defending eggs against Assassin Bug (Reduviidae) predator, Amazon, Ecuador

Piotr Naskrecki / Treehopper (Umbonia crassicornis) portrait, Costa Rica