Araneus Spider

Araneus Spider, originally uploaded by photofox78.

This was a bit of a challenge for me, I'm not particularly fond of Spiders (a bit of a understatement), but this spider caught my attention because of the two "humps" seen on it's back.

After a little research I'm fairly certain it's some sort of Araneus Spider. Apparently females of this species often have these bumps, but I could not find any information that indicates what their purpose is, if they have one. (Please post if you know!)

This was lit using fill flash mode on a Nikon SB800.