Technical Abstract: We conducted 2 experiments to determine the best configuration of CDC-trap for catching male and female Phlebotomus papatasi. Darker traps caught significantly more male sand flies; significantly more females were captured by traps with either all black or a combination of black and white features. Attraction may be due to dark color or contrast in colors. CDC traps with suction and selected other features were also evaluated. Significantly more females than males were caught by all experimental trap configurations except the control traps with suction only. Traps with CO2 caught more sand flies than traps without CO2. Traps with black color, heat and moisture captured significantly more sand flies than the control traps, but with the addition of CO2, these traps catch significantly more sand flies than the other traps evaluated. Inverting traps increased the catch for like traps by about 2X.