Your gall page is great! Any idea what insect might be producing this gall? I’m pretty sure the tree is in the Myrtaceae family, but beyond that, I couldn’t say. The tree is in western Panama at an altitude of about 800 m. Thanks for any help.
We don’t know anything about your Gall from Panama. It is unusual in that it is a twig gall and not a leaf gall. We will post your photo to see if any of our readers knows the answer, but you shouldn’t get your hopes up too high for an identification. Tropical insects are even difficult to identify when they are large, spectacular looking, or highly unusual, unlike this relatively innocuous Gall.