Fig. 2

Median-joining network for 116 Phlebotomus papatasi cyt b sequences. Circle size and circle color indicates frequency and geographical location of haplotypes, respectively. Haplotype numbers are written next to the corresponding circle PPHXX. Red numbers between haplotypes indicate mutation sites. Older haplotypes are depicted as internal nodes while more recently diverged haplotypes depict the external nodes. PPHXX numbering is out of order to reflect the numbering of identical haplotypes in Fig. 4