I was wondering if you could tell me what this insect is? I saw it while hiking at Golden Gate State Park in Colorado. Thanks!
What a beautiful action photo of a Tachinid Fly. We are currently experiencing some technical difficulty, and we can post letters, but new photos are not appearing on the web. We have contacted our web host to see if he can correct the problem. We believe your Tachinid Fly is Adejeania vexatrix based on BugGuide. BugGuide also states that this Subfamily of Tachinids, Tachininae, parasitizes caterpillars.