Trap for flies (100) and their likes comprising: - a support (11) having a surface (12) on which flies (100) and similar insects may settle - an adhesive material 13 covering the surface 12 and suitable to retain a fly 100 or a similar insect that settles on to it - at least a bait 14 adapted to attract flies 100 and similar insects placed in relation to the surface 12 in a position such as to attract the flies 100 or similar insects to settle on the surface 12 said surface (12) is configured so as to reflect or to emit a radiation of yellow light.
