Figure 1: Phylogenetic tree using rDNA ITS-2 data set nucleotide sequences according to MEGA 5, including the Cx. theileri populations studied, together with other proximal Culex species available in GenBank. Evolutionary relationships of taxa were calculated using the Neighbor-Joining method. The percentage of replicate trees in which the associated taxa clustered together in the bootstrap test (1000 replicates) are shown next to the branches. The tree is drawn to scale, with branch lengths in the same units as those of the evolutionary distances used to infer the phylogenetic tree. The evolutionary distances were computed using the Kimura 2-parameter method and are in the units of the number of base substitutions per site.