2. MATERIAL AND METHODS
2.1. Populations sampling
2.1.1 Allopatric
populations
Ischnura elegans extends from Greece to Sweden while I.
graellsii is an Iberian-Maghreb endemic species with a more restricted
range in western North Africa and the Iberian Peninsula (Askew, 1989).
We sampled individuals from five populations from the allopatric
distribution of I. elegans and in three populations from the
allopatric distribution of I. graellsii (Fig. 1A; Table 1). These
allopatric populations were selected to cover a large part of their
latitudinal distribution, with the aim of including a large and
representative amount of the total genetic variation.