6(9):2444–2459. doi: 10.1093/gbe/evu198This erratum includes an addition to the Acknowledgments section:The authors are grateful to Kevin Thornton for performing a subset of the library preparation and sequencing of the ten Drosophila mauritiana and the two Drosophila simulans lines, this work was supported in part by a grant from the National Institutes of Health (R01-GM085183), in addition to National Institutes of Health grant R01-ODO1054801 to D.G. and D.C.P.The authors apologize for this oversight.