2014, Day 11 - Crabby

I wonder if I miss things sometimes when I am focused on little details.  Missing the forest for the trees, so to speak.  This is one of many crab spiders I found while in El Salvador and Mexico last fall.  They were everywhere and every time I found a bigger one I wanted a picture.  They all look pretty similar but I can't help myself.  This guy was eating something tasty and didn't mind having an audience at all.  I don't know why he has a triangular abdomen, it must aid in camouflage but I can't imagine how.

Canon 1D X, Canon 100/f2.8L IS
100mm, f8, 1/320 sec @ 3200 ISO