Small-headed Fly vs March Fly
Side-by-side species comparison
| Attribute | Small-headed Fly | March Fly |
|---|---|---|
| Scientific Name | Ogcodes pallidipennis | Bibio marci |
| Order | Diptera | Diptera |
| Family | Acroceridae | Bibionidae |
| Size | 4-8 mm | 10-13 mm |
| Habitat | Grasslands | Underground |
| Diet | Parasitoids | Detritivores |
| Regions | Europe | Europe |
| Conservation | Least Concern | Least Concern |
Small-headed Fly
A round-bodied fly with a tiny head whose larva parasitizes spiders from the inside.
Did You Know?
The first-instar larva attaches to a passing spider and burrows inside to feed.
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.