St Mark's Fly vs Ewingi Japygid
Side-by-side species comparison
| Attribute | St Mark's Fly | Ewingi Japygid |
|---|---|---|
| Scientific Name | Bibio johannis | Catajapyx ewing |
| Order | Diptera | Diplura |
| Family | Bibionidae | Japygidae |
| Size | 6-10mm | 5-10 mm |
| Habitat | Underground | Underground |
| Diet | Root Feeders | Predators |
| Regions | Europe | United States |
| Conservation | Least Concern | Least Concern |
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.
Ewingi Japygid
A predatory dipluran found in soils of the southeastern United States. It uses its forceps-like cerci to capture small soil invertebrates.
Did You Know?
It uses its pincer-like cerci to grab prey, much like an earwig.