Figure 1: Morphometric characters used to discriminate females of Phlebotomus caucasicus and Phlebotomus mongolensis. (A) Length of antennal segment 3 (A3), segment 4 (A4), segment 5 (A5) and segments 4 and 5 (A4+A5). (B) Length of ascoid on A4 (Ascoid4) and ratio of Ascoid4/A4. (C) Length of the labrum or epipharynx (Epi). (D) Length of the pharynx (Ph.L).