St Mark's Fly vs Small Carpenter Bee
Side-by-side species comparison
| Attribute | St Mark's Fly | Small Carpenter Bee |
|---|---|---|
| Scientific Name | Bibio johannis | Ceratina calcarata |
| Order | Diptera | Hymenoptera |
| Family | Bibionidae | Apidae |
| Size | 6-10mm | 5–8 mm |
| Habitat | Underground | Underground |
| Diet | Root Feeders | Nectar Feeders |
| Regions | Europe | Eastern North America |
| Conservation | Least Concern | Not Evaluated |
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.
Small Carpenter Bee
A tiny metallic blue-green bee that nests in the pithy stems of broken twigs. It is one of the few bee species showing rudimentary social behavior.
Did You Know?
Mothers guard their nests and feed their developing larvae with pollen, a behavior rare among solitary bees.