Figure 1. Map of northern Europe depicting the source populations and distribution of C. johanssoni and sampling sites in previous studies of other damselfly taxa (discussed in the text).

The black boxes represent areas from which we sampled C. johanssoni (this study) grey boxes represent sampling sites of C. puella and C. pulchellum [46] and crossed boxes represent sampling sites of L. sponsa [22]. Gray shading shows the main area of European distribution of C. johanssoni based on [39].