Shore fly
and northern Mexico. In Europe and Asia, the species Scatella stagnalis occurs widely. These small black flies can be found naturally at marshy, muddy lake [...] lake shores and intertidal zones, and they breed readily in other moist environments. In greenhouses, adults feed on algae and their larvae on algae and [...] live in and just beneath the algal crust growing on top of the soil/medium, where they feed on algae, bacteria, yeasts and other microorganisms. In 3–6