False Stable Fly vs St Mark's Fly
Side-by-side species comparison
| Attribute | False Stable Fly | St Mark's Fly |
|---|---|---|
| Scientific Name | Muscina stabulans | Bibio johannis |
| Order | Diptera | Diptera |
| Family | Muscidae | Bibionidae |
| Size | 7-10 mm | 6-10mm |
| Habitat | Farmland | Underground |
| Diet | Predators | Root Feeders |
| Regions | Europe, North America, Asia | Europe |
| Conservation | Least Concern | Least Concern |
False Stable Fly
A robust fly resembling a large house fly with reddish-yellow patches at the wing base. Larvae can be facultative predators of other fly larvae.
Did You Know?
Its predatory larvae sometimes consume house fly larvae, making it an accidental biocontrol agent.
St Mark's Fly
A small black fly that swarms in May. Males have large heads with huge eyes that almost meet on top.
Did You Know?
Often confused with the larger Bibio marci but emerges slightly later and has entirely dark legs.