Data from: Genome-wide markers test the status of two putative species of North American bumble bees

Accurate species delimitation is critical to identifying the conservation status of species. Molecular species delimitation methods have revealed previously unrecognized cryptic species across the taxonomic spectrum. However, studies vary in the molecular markers selected, analytical approaches used, and taxon sampling, which sometimes results in conflicting conclusions. We tested a two-species hypothesis of the Bombus occidentalis complex using nuclear (ultraconserved elements, UCE) and mitochondrial (cytochrome c oxidase I, COI) markers to infer maximum likelihood and Bayesian phylogenies for the taxa. We extracted tissue and sequenced 102 specimens from across the geographic range of the species complex. Through our analyses, we concluded that the complex actually represents two species, B. occidentalis and B. mckayi. Here, we include the raw sequences for the UCE and COI analyses and the final newick-formatted trees from the analyses.