June 8, 2010
I found this bug eating the spider on my outdoor screen. After it was done eating its prey, it turned back to brown.
We really like your subject line, because this Wheel Bug really is an orange masterpiece. Your observation is not accurate. The Wheel Bug has not just eaten a spider. The Wheel Bug has molted and the cast off skin or exuvia is what you have mistaken for prey. The coloration of the newly molted Wheel Bug darkened as the exoskeleton hardened.