Acknowledgments
We thank Bill Bowman, Kris Hess, and Cesar Nufio for facilitating research at the University of Colorado’s Mountain Research Station. For help with species identifications of insects, we thank Virginia Scott, Boris Kondratieff, Adrian Carper, Andy Hicks, Jade Savage, Joel Gardner, and Tim Szewczyk. We thank students who helped with data collection in the field, especially Tyrah Delger, Hector Castillo-Rosado, Samantha Skerlec, Emily Joy, and Claire Stufflebeam. During this study, Julian Resasco was supported by an NSF Postdoctoral Research Fellowship in Biology (award 1309192) and Chancellor’s Postdoctoral Fellowship from the University of Colorado.