Despite being morphologically identical, some specimens supposedly belonging to three species, namely "Amphidromus semitessellatus", "A. xiengensis" and "A. areolatus", apparently had polyphyletic origins of mtDNA haplotypes. This resulted in the same species simultaneously appearing in distinct clades along the topology: for instance, "A. areolatus" can be found in two different clades in Sutcharit and colleague's (2007) cladogram, clustered respectively with "A. xiengiensis" and also with "A. semitesselatus". According to the authors, these results could be explained by convergent and polymorphic shell color patterns (e.g., the shells of the specimens had very similar colors and shape, though the mtDNA markers showed significant differences). Alternatively, they could also be the result of introgressive hybridization or ancestral polymorphism of mtDNA. In any case, analyses of phylogeography using other markers (nuclear markers or other mtDNA markers) or additional morphological characters would still be necessary to further clarify these issues.