Acknowledgments
We would like to thank Carson Allan, Joshua M. Coleman, and Nathaniel Talamantes for their assistance in the fly work of this project. This work was supported by the University of Arizona, and an NSF grant (IOS-1557697) to L.M.M. We thank the Catalina Island Conservancy and the United States National Park Service at Organ Pipe National Monument for allowing the original collection of the Drosophila utilized to establish the stocks used in this study.