Shore fly
algae and decaying organic matter on planting substrate. Growers consider shore flies to be mostly a nuisance pest, but the insects can act as vectors for [...] organisms, they do not cause any direct damage to plant production. However, they are considered a nuisance pest because the flies : Leave their feces (as black [...] General Shore flies of the genus Scatella are a common greenhouse pest found throughout the United States, Canada and northern Mexico. In Europe and Asia