Table 1. Sampling locations with location codes for Sistrurus catenatus and Sistrurus tergeminus included in the study.
| Location | N, total | N, clustering | N, fastsimcoal |
|---|---|---|---|
| Illinois | |||
| Carlyle Lake (CARL) | 3 | 3 | |
| Cook County (COOK) | 1 | 1 | |
| Eldon Hazlet State Park (EHSP) | 2 | 2 | |
| Ryerson (RYSN) | 2 | 2 | |
| South Shore State Park (SSSP) | 3 | 3 | |
| Willow Sanders (WLSN) | 2 | 2 | |
| Indiana | |||
| Dunlap (DNLP) | 3 | 3 | |
| Iowa | |||
| Buhr Access (BUHR) | 13 | 3 | 13 |
| Chickasaw (CKSW) | 2 | 2 | |
| Sweet Marsh (SWTM) | 1 | 1 | |
| Kansas | |||
| Ellsworth County (TERG) | 4 | 2 | 4 |
| Russell County (TERG) | 1 | 1 | |
| Michigan | |||
| Barry (BARY) | 2 | 2 | |
| Kalamazoo (KMZO) | 1 | 1 | |
| Kalkaska (KSKA) | 2 | 2 | |
| Mackinac Island (MKNC) | 1 | 1 | |
| Oakland (OKLD) | 2 | 2 | |
| Missouri | |||
| Pershing State Park (TERG) | 1 | 1 | |
| Squaw Creek NWR (TERG) | 2 | 2 | |
| New York | |||
| Bergen (BERG) | 3 | 3 | |
| Cicero (CCRO) | 3 | 3 | |
| Ohio | |||
| Grand River Lowlands Site 1 (GRL-1) | 3 | 3 | |
| Grand River Lowlands Site 2 (GRL-2) | 3 | 3 | |
| Grand River Lowlands Site 3 (GRL-3) | 3 | 3 | |
| Killdeer Plains (KLDR) | 13 | 3 | 13 |
| Prairie Road Fen (PRDF) | 3 | 3 | |
| Spring Valley (SPVY) | 3 | 3 | |
| Willard (WLRD) | 3 | 3 | |
| Wright Patterson AFB (WTPT) | 2 | 2 | |
| Ontario | |||
| Beausoleil Island (BEAU) | 3 | 3 | |
| Bruce Peninsula (BPNP) | 3 | 3 | |
| Killbear Provincial Park (KBPP) | 3 | 3 | |
| Ojibway (OJIB) | 2 | 2 | |
| Wainfleet Bog (WAIN) | 3 | 3 | |
| Pennsylvania | |||
| State Game Lands 95 (GLAD) | 3 | 3 | |
| Jennings (JENN) | 3 | 3 | |
| Venango (VNGO) | 3 | 3 | |
| Wisconsin | |||
| Necedah (NCDH) | 1 | 1 | |
| Trempelau (TREM) | 2 | 2 | |
Total sample sizes from each location, along with sample sizes for the clustering and fastsimcoal analyses, are included. Data were also generated for one additional S. miliarus sample that served as an outgroup to generate an unfolded site frequency spectrum for fastsimcoal analyses.