Figure 2

Frequency of the groups defined by STRUCTURE by locality. Black dot: positive sample site for Cx. pipiens s.s. (Cambado, Comporta, Pego, Possanco, Torre); Red dot: negative sample site for Cx. pipiens s.s. (Carvalhal, Monte Novo do Sul). Color graphics: proportion of females; Red: cluster 1 (molestus form); Blue: cluster 2 (pipiens form); Purple: admixed (hybrids). Grey-scale graphics: proportion of mosquito collections; Dark grey: proportion of collection performed in chicken coops; Light grey: proportion of collection performed in other type of shelter.