Fig. 2

Set-up of an experiment comparing number of sand flies captured on differently coloured sticky traps. Traps were set vertically around an Acacia seyal tree on a black cotton soil site at the periphery of Belo village, Gedarif state, eastern Sudan; March–April 2016. The experiments were conducted on calm nights, without noticeable wind blowing from any direction. The circular design of traps setup was intended to ensure that they had similar exposure to sand flies arriving from the surroundings. Each circle contained a duplicate of black, red, yellow, white and transparent traps (located between the red and the white traps)