Fig. 2From: Development of microsatellite markers for population genetics of biting midges and a potential tool for species identification of Culicoides sonorensis Wirth & JonesPrincipal component analysis (PCA) of individuals of the C. variipennis complex using the a 21-marker, b seven-marker, and c four-marker datasets. Each dot represents an individual and each color corresponds to the species assignment generated from the STRUCTURE analyses. The shaded ovals denote the confidence ellipse for the mean of each speciesBack to article page