Shore fly
feed on green algae. However, they can transmit plant diseases and can be a nuisance to greenhouse works by their sheer numbers. Frass deposited on leaves [...] can occur on such a scale that growth, particularly of young cuttings, can be retarded. Life cycle and appearance of Shore fly The life cycle of the shore [...] of damp soil, where they also pupate. The adult shore fly is black, about 4 to 5 mm long, and stout with short antennae and short legs. The head of the adult