Acknowledgements
This work was completed with helpful discussion from Justin Blumensteil, Joanne Chapman, Richard Glor, Stuart MacDonald, Maria Orive and Caroyln Wessinger. We would especially like to thank Kelly Dyer and Paul Guinsberg for proposing the idea of the manuscript and providing feedback on early sections of the manuscript. We greatly appreciate help provided by John Kelly, for providing scripts to calculate DXY as well as advice on population genetic inference and comments on the manuscript. Collections were completed with assistance from Todd Schlenke and the Southwest Research Station. We thank Brittny Smith and the KU CMADP Genome Sequencing Core (NIH Grant P20 GM103638) for assistance in genome isolation, library preparation and sequencing. This work was supported by a K-INBRE postdoctoral grant to TH (NIH Grant P20 GM103418). This work was also funded by NIH Grants R00 GM114714 and R01 AI139154 to RLU.

Data Availability

All data is available upon request. All sequencing information is available on the NCBI SRA (SRA: SRP187240), while all genome used are available on the NCBI genome database (SRA: GCA_004354385.1, GCA_005876895.1).