Relationship between genetic distance [FST/(1 − FST)] and geographic distance (km) for all 22 samples (open and closed diamonds combined; rxy = 0.191, P = 0.137, r2 = 0.036, upper line) and excluding the five outlier samples (filled diamonds only; rxy = 0.690, P < 0.001, r2 = 0.476, lower line).