Median-Joining network showing the relationships among the haplotypes of Agabus uliginosus s. l. in the context of A country of origin B morphotypes. Colors indicate individuals representing different countries of origin or morphological types. Each bar represents one substitution, whereas small black dots indicate undetected/extinct intermediate haplotype states. The sizes of the circles are proportional to the frequencies of haplotypes. Dashed lines encircle separate BINs.