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Fig. 1 | BMC Evolutionary Biology

Fig. 1

From: Distribution and population genetic variation of cryptic species of the Alpine mayfly Baetis alpinus (Ephemeroptera: Baetidae) in the Central Alps

Fig. 1

Sampling sites and the distribution of two B. alpinus cryptic lineages (A and B) and B. melanonyx within four major European drainages (Danube: Da, Rhone: Ro, Rhine: Ri and Po: Po) in the Swiss Alps. Sites are depicted at a the regional-scale and b within basin scale (labelled Ri, Ro and Da and by boxes in (a). In b, the first letter of the location name indicates the basin (J = Joerisee, R = Roseg, L = Loetschental) and the second letter the river type (M = main channel, T = tributary). Dotted arrows show river flow direction

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