Acknowledgements
We thank the UC Davis Arboretum, UC Anza Borrego Desert Research Center and Davis homeowners for allowing us access to collect Xylocopasamples, the Bohart Museum of Entomology for access to voucher specimens, and members of the Vannette lab for comments on previous versions of this manuscript. We acknowledge funding to MH from UC Davis Provost’s Undergraduate Research Fellowship and the UC Natural Reserve System through the Field Science Fellowship, and to RLV from National Science Foundation DEB #1929516.
Data Accessibility and Benefit-Sharing: All sequence data will be accessible upon acceptance on NCBI Short Read Archive (project number ####), and all metadata and code will be available via Dryad and Zenodo (accession number ####). **draft code and metadata submitted with the current manuscript draft.