This study delineated the phylogeny of common salt marsh Aedes mosquitoes through phenetic and phylogenetic analyses of electrophoretic data. The results were subsequently used to determine if existing classifications based on morphology were consistent with the derived phylogeny. Electromorphs were coded by allele frequency and quantified by one Manhattan and six Euclidean distance measures. Phenetic assessment was accomplished by UPGMA cluster analysis. Phylogenetic treatments included the distance Wagner procedure in producing both midpoint and out-group rooted trees, and by construction of the most parsimonious cladogram.