Maximum statistical parsimony networks of the species pairs. A. Agonum micans (Nicolai, 1822) (blue) and Agonum scitulum Dejean, 1828 (red); B. Agonum impressum (Panzer, 1796) (yellow) and Agonum sexpunctatum (Linne, 1758) (green) and C. Agonum duftschmidi Schmidt, 1994 (violet) and Agonum emarginatum (Gyllenhal, 1827) (light brown). Used parameters included default settings for connection steps, gaps were treated as fifth state. Each line represents a single mutational change, whereas small black dots indicate missing haplotypes. The numbers of analysed specimens (n) are listed, whereas the diameter of the circles is proportional to the number of haplotypes sampled (see given open circles with numbers). Scale bars: 1 mm. Beetle images were obtained from http://www.eurocarabidae.de.