Fig. 3
Effect of direct or diffuse illumination on the occurrence of wing-reflected light flashes. Single-frame photographs of fanning wings of abdomen-mounted Lucilia sericata females taken from high speed video recordings (15,000 frames per second) under direct light (a–d) or under diffuse light (e–h). a–d Photographs in the upper row reveal changes in the intensity of light reflected off the wing as it rotates during wing fanning, thus causing a flashing light effect in b; e–h Photographs in the lower row fail to reveal any flashing light effect.