Leaf beetle

This is a beetle. Try to check the wiki for Beetles and Hemiptera. There is a lot of general information about the two groups: http://en.wikipedia.org/wiki/Hemiptera http://en.wikipedia.org/wiki/Beetle

I believe this is a leaf beetle, Chrysomelidae Beetles (Coleo-ptera=shield wing) have two elytra, wings modified as hard covers that form a line along their backs. Bugs (Hemi-ptera = half wing) have the first half of their wings thickened and the tips are membranes, they usually form a cross over their back with a large central triangular scutellum. Beetles have biting mouth-parts to eat leaves, etc. Bugs have sucking mouth-parts like aphids and cicadas with whom they are more closely related. Beetles have metamorphosis; egg, grub, pupa and adult. Bugs have egg, small bug, bigger bug, bigger bug and then winged adult bug, looking somewhat similar. Hope that helps.

I vote beetle.