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Principal coordinate analysis (PCoA) between four species of grasshoppers. Ac: red rectangle; As: blue circle; Sm: yellow triangle; Ta: gray polygon. The horizontal and vertical coordinates are the two eigenvalues that cause the largest difference between samples, and the main influence degree is reflected in the form of percentage. Ac, Acridia chinensis; As, Atractomorpha sinensis; Sm, Sphingonotus mongolicus; Ta, Trilophidia annulate.
