Shore fly
United States, Canada and northern Mexico. In Europe and Asia, the species Scatella stagnalis occurs widely. These small black flies can be found naturally [...] and short antennae, and their wings can have greyish brown patches. While shore flies are strong, quick fliers and can move throughout a greenhouse readily [...] Growers consider shore flies to be mostly a nuisance pest, but the insects can act as vectors for disease organisms, such as Fusarium , among both food crops