Fig. 4From: Ecological differentiation of members of the Culex pipiens complex, potential vectors of West Nile virus and Rift Valley fever virus in AlgeriaProportions of stenogamous / eurygamous Cx. p. pipiens collected in El-Kala (a), M’Sila (b), Tinerkouk (c), and in underground breeding sites in urban environments (d). Error bars indicate the 95 % confidence interval Back to article page