Buffalo Treehopper

I would also tend to Expensa and both are Keeled Treehoppers.

Thanks bayucca. I'm sure this is not A. chichiana because the keel was not black and not very long... I was looking at some pictures of A. expensa and it looks very similar.

Membracidae, Smiliinae, Antianthe sp.. It is either Antianthe chichiana or Antianthe expensa, which is quite common. But I do not think it is serious enough to ID this one from a single picture. Do you remember the keel on the side of the head?