Yellow Pan Traps

It has been shown that many small day-active insects are attracted to the colour yellow. This trapping method uses small yellow dishes filled with water to which detergent has been added. The dishes are placed on the ground in conspicuous places in the morning. When flying insects land on the surface of the water they rapidly sink and drown. At the end of the day, the water is strained through a fine sieve and the specimens are retrieved.