Figure 5 from: Potapov GS, Kondakov AV, Filippov BYu, Gofarov MYu, Kolosova YS, Spitsyn VM, Tomilova AA, Zubrii NA, Bolotov IN (2019) Pollinators on the polar edge of the Ecumene: taxonomy, phylogeography, and ecology of bumble bees from Novaya Zemlya. ZooKeys 866: 85-115. https://doi.org/10.3897/zookeys.866.35084

Figure 5 - Median-joining haplotype networks of the available COI sequences of bumble bees from Novaya Zemlya and other Arctic areas. (A) Bombus hyperboreus . (B) B. pyrrhopygus . (C) B. glacialis . The circle size is proportional to the number of available sequences belonging to a certain haplotype (smallest circle = one sequence). The small black dots indicate hypothetical ancestral haplotypes. Red numbers near branches indicate the number of nucleotide substitutions between haplotypes.