Fig 3. Estimated ancestry of potato psyllids collected from bittersweet nightshade patches and potatoes.

Potato psyllids were collected from bittersweet nightshade patches in (A) 2012, (B) 2013, and from potato fields in (C) 2013. The number of ancestral populations (K) ranged from K = 2 to K = 7, and only the grouping pattern that represents the majority (> 50%) of the runs were presented. Numbers below each K indicate the number of runs (of 50 runs) showed the representative grouping. Each vertical bar represents a psyllid individual. * indicate “purple cluster” (assigned by majority-rule at K = 3), a genetically distinct group which was further analyzed in AMOVA.