Fig. 4 in Diversification Pattern of the Widespread Holarctic Cuckoo Bumble Bee, Bombus flavidus (Hymenoptera: Apidae): The East Side Story

Fig. 4. Median-joining network of haplotypes based on nuclear genes ITS and PEPCK. Circle sizes are proportional to frequencies of haplotypes. Colors of haplotypes refer to geographic areas (Fig. 3). Black bars on lines represent the number of mutation(s) between two close haplotypes. Black circles are outgroups (B. skorikovi and B. norvegicus).