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. 2020 Apr 29;37(9):2568–2583. doi: 10.1093/molbev/msaa108

Fig. 1.

Fig. 1.

Sampling locations and PCA. (A) Sampling locations of Helicoverpa individuals. (B). Genetic PC1 and PC2 of ∼50,000 genome-wide SNPs. Color codes indicate different samples and species based on mitochondrial sequences and the groups used for the analyses. Helicoverpa armigera (Australia) refers to the subspecies H. armigera conferta and H. armigera (Old World) to the subspecies H. armigera armigera in the rest of the Old World. Helicoverpa zea (New World) comprises Brazilian preinvasion and United States, and finally, H. armigera 2013/2017 and H. zea 2013/2017 refer to the postinvasion sympatric populations in Brazil.