March Fly vs Sweat Fly
Side-by-side species comparison
| Attribute | March Fly | Sweat Fly |
|---|---|---|
| Scientific Name | Bibio marci | Hydrotaea irritans |
| Order | Diptera | Diptera |
| Family | Bibionidae | Muscidae |
| Size | 10-13 mm | 5-7 mm |
| Habitat | Underground | Farmland |
| Diet | Detritivores | Dung Feeders |
| Regions | Europe | Europe, North America |
| Conservation | Least Concern | Least Concern |
March Fly
A common black fly that swarms in large numbers around Saint Marks Day in April.
Did You Know?
Mating pairs fly joined together with the smaller male dangling beneath the female.
Sweat Fly
A small dark fly attracted to perspiration on humans and livestock. It forms dense head-circling swarms in summer that can be extremely annoying.
Did You Know?
Swarms of these flies can reduce cattle weight gain by causing constant head-tossing behavior.