Haplotype network of COI of the An. subpictus populations. The network clade A is composed of sibling species A of Sri Lanka (white large circles) and Indian (black large circles). The network clade B consists of species B of Sri Lanka (white large circles) and Myanmar (black large circles). The two networks are separated by 41 mutations. Large circles indicate individual sequences and the haplotype numbers are indicated by H series). Small empty circles represent missing hypothetical haplotypes.