Hey Bill, thanks for the comments I was actually on a small boat at the time... We were moving closer to the bank to check out some monkeys when i saw this little beastie hanging there. So i called out to our guide and told him to reverse quick!!! The strand of web(?) he was dangling off was about 20 feet long! Amazing really! Took a couple of snaps of him and sharpened him a bit in Photoshop. I'd say that he was probably twice as big as what you see there in real life, so not massive, but scary enough anyways!
Here's the data on the shot:
Nikon D90 | Nikkor 70-300mm VR @ 300mm | f/5.6 | 1/100 | ISO 800 | Handheld, standing in a boat (the VR on this lens is very good)
I'd love to get rid of my arachnophobia, I really would. But I don't know how