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Distribution of pairwise distances of ant genus Pheidole calculated using Kimura two-parameter model (Kimura 1980) among (a) 47 Cytochrome oxidase 1 (CO 1) sequences from Rio Cachoeira Nature Reserve in Brazil and (b) 141 CO1 sequences from the Genbank. The 47 sequences have a peak near zero and another between 18% and 24%, while the 141 sequences have a major peak between 16% and 24% of sequence divergence. High quality figures are available online.
