Fly (Mesembrina meridiana) on Forsythia blossom
Actual size 10mm, Trough of Bowland, Lancashire UK

Canon300D with 100mm f2.8 macro lens. f/8, 1/160 with fill in flash

M. meridiana tends to live in association with cattle: it's larvae feed on cowpats and other animal dung. Here it shows it's other side: flies contribute more to flower pollenisation than bees or butterflies.