Gasteracantha Cancriformis aka the crab spider, spiny-backed orbweaver, spiny orbweaver spider, crab-like orbweaver spider, crab-like spiny orbweaver spider, jewel spider, spiny-bellied orbweaver, jewel box spider or smiley face spider
When I bought my first DSLR (The Sony A100) I got a good photo of a Jeweled Spider in my backyard using a 50mm non-macro lens with some macro lens add-ons. It came out pretty well. The original blog post from 2009 is here if you want to check it out.
This past weekend I spotted a Jeweled spider in the front yard but this one was not the orange color I came to expect. This one was white with black spots. These shots are with my A850 and the 100mm Macro lens. Click the images below to see the full sized, much more frightening versions: