Abstract: An insect trap comprises an outer casing (3) having an opening, a light source (2), and a cover (1c) substantially closing the opening of the casing. The cover (1c) tapers from a first cross-section which matches that of the opening of the outer casing to a second cross-section which defines an insect entry port (4) leading into a chamber (5). The cover (1c) is made of a material that is substantially transparent to light having the frequency of the light source (2), and the light source is positioned so as to be visible from the open end of the outer casing (3) through the cover.

Abstract: UV sensing apparatus comprises a substantially light-proof housing (1), an aperture (1a) formed in the housing, a filter (2) positioned within the housing at the internal mouth of the aperture, a fluorescent member (3) positioned within the housing on that side of the filter remote from that adjacent to the aperture, and a light sensor (4) positioned within the housing to receive light emitted by the fluorescent member. The filter (2) is such that it substantially removes visible light, the fluorescent member (3) is such as to fluoresce when subjected to UV radiation, and the light sensor (4) is positioned so that substantially none of any electromagnetic radiation entering the housing (1) via the aperture (1a) impinges upon the light sensor.