Abstract: An insect trap comprising a base defining a receptacle with an open top, a bait support supported by the base, the periphery of the base supporting an intermediate cover and a light transmissive cover, said intermediate cover having an aperture providing access between a first space defined between the intermediate cover the bait support and a second space between the intermediate cover and the light transmissive cover wherein the inter-engagement between the base and the light transmissive cover or the intermediate cover and the light transmissive cover comprises a pair of substantially concentric portions which are capable of relative rotation with respect to each other wherein each portion is formed with a set of apertures at spaced locations which can be brought into and out of alignment with respect to each other on relative rotation between the portions to vary the degree of access between the exterior of the insect trap and the first space.