Shore fly
black, about 4 to 5 mm long, and stout with short antennae and short legs. The head of the adult has a pair of conspicuous eyes. The wings have grey-brown [...] diseases and can be a nuisance to greenhouse works by their sheer numbers. Frass deposited on leaves or flowers in ornamental crops, lettuce and herbs also [...] cosmetic damage, and sometimes this can occur on such a scale that growth, particularly of young cuttings, can be retarded. Life cycle and appearance of Shore