Contrasting the depths of divergence between gene-tree and coalescent estimates in the North American Racers (Colubridae: Coluber constrictor)

The North American racers (Coluber constrictor) are widely distributed across the Nearctic and numerous studies have demonstrated extensive variation in morphology, ecology, and population genetic structure. Here we take an integrative approach to understand lineage diversification within this taxon by combining genomic sequence capture data, mtDNA sequence data, morphometrics, and ecological niche models. Both the genomic data and mtDNA phylogeographic analyses support five lineages distributed across the range of this species. However, demographic model selection based on these two datasets strongly conflict in both the model of divergence and estimates of timing of lineage divergence. While mtDNA and concatenated genomic data suggest a Miocene origin of these distinct groups, coalescent-based demographic models of sequence capture data suggest lineage diversification occurred at ~33 kya in allopatry without gene flow. Using linear morphological measurements of head shape we demonstra..., Genomic data were generated via sequence capture using the squamate specific SqCL probe set. mtDNA data were mined from these sequence capture data. The locality information used for ecological niche models were obtained from VertNet as georeferenced museum specimen vouchers., , # Contrasting the depths of divergence between gene-tree and coalescent estimates in the North American Racers (Colubridae: Coluber constrictor)

[https://doi.org/10.5061/dryad.rxwdbrvhh](https://doi.org/10.5061/dryad.rxwdbrvhh)

Data contained here are files needed to reconstruct ecological niche models and the assembled genomic and mtDNA data sets used in this study.

## Description of the data and file structure

Locality information used for ecological niche models. Each of these files are named according to the lineage that the locality data belongs to. Within each file are the vouchered museum specimen numbers, latitude and longitude, and description of the collection locality.

Central_Georeferenced_Coluber_From_VertNet_thinned_08032021.csv
East_Georeferenced_Coluber_From_VertNet_thinned_08032021.csv
Florida_Georeferenced_Coluber_From_VertNet_thinned_08022021.csv
south_texas_Georeferenced_Coluber_From_VertNet_thinned.csv
Western_Georeferenced_Coluber_From_VertNet_thinned_08212023...