Argiope protensa

I think this is a Argiope protensa, but I could be wrong. He looks a little less cute than the other one I posted up, but he was really nice to photograph. He's part of the genus more commonly known as the 'garden spider'. Interesting fact:

The spiders of this family are easily identified by the zig zag silk construction (stabilimentum), usually a cross, they make in their web. Perhaps the most important function of stabilimenta is to attract insects. The silk of the stabilimentum reflects UV light and pollinating insects are lured to these threads. If the spider is attacked it starts shaking vigorously in her web. The whole web becomes white because of the stabilimentum. This frightens off attackers.

Awesome!