Figure 5 from: Arriaga-Jiménez A, Roy L (2015) Co1 DNA supports conspecificity of Geomyphilus pierai and G. barrerai (Coleoptera, Scarabaeidae, Aphodiinae) and is a good marker for their phylogeographic investigation in Mexican mountains. ZooKeys 512: 77-88. https://doi.org/10.3897/zookeys.512.9646

Figure 5 - The size of the circles is proportional to the haplotype frequency. The length of links between haplotypes is proportional to the number of mutated positions. The median vectors that represent hypothetical intermediates or unsampled haplotypes are shown in small open dots. The haplotype circles' color corresponds to the sampling origin (one color per mountain).