Figure 4From: Ecological niche model of Phlebotomus alexandri and P. papatasi (Diptera: Psychodidae) in the Middle EastJackknife test of training gain for P. alexandri. Environmental variables: bio1through bio 19 represent the bioclimatic variables (Table 2); xsub_alt is the elevation layer; xsub_g4 is the land cover layer.Back to article page