It is not. It's a Giant Lichen Orbweaver (Araneus bicentenarius) These guys have starting coming out to play. They always start making appearances around this time of year and terrify me at least 5-7 times a day when I come within inches of walking into their monster webs. I still don't know how birds don't just get stuck in those things. I don't know how I don't get stuck in those things. I mean, they're like 8 feet across sometimes, 3 feet wide. (I'm not exaggerating!).
I've been working in Texas since 2007 and have never gotten any good photos of these spiders. What? Unacceptable! So I decided to change that. I actually took them with my 500 mm since I was taking bird photos at the time but yeah, well, these things are just that big so it seemed to get the job done fairly well.
As freaky as they are, and as huge as they are - I should have taken a reference photo- they're kind of awesome too. That's all you get for now. I've got more photos of 'em I'll put up eventually. Nature Notes