Ultraconserved elements have become widely used in phylogenomic reconstruction, allowing for relatively cost-effective sampling of a large portion of the genome. However, older genetic data can still be of use in the study of phylogenetic relationships. We recently published a study on the phylogenetic relationships of the largest group of brood parasitic bees - the subfamily Nomadinae within the family Apidae. While this study included unprecedented taxonomic sampling for this group, however, some phylogenetic questions - such as reconstructing biogeography - require a broader geographic distribution of samples than this study included. To investigate the biogeographic history of the Nomadinae, we supplemented our existing UCE dataset with a broader dataset of previously published barcode data which improved our taxon sampling. In line with other recent studies, we find that this method, when applied cautiously, can make effective use of such "legacy" data for phylogenomic and phylogeographic applications.
