St Mark's Fly vs Dot Moth
Side-by-side species comparison
| Attribute | St Mark's Fly | Dot Moth |
|---|---|---|
| Scientific Name | Bibio johannis | Melanchra persicariae |
| Order | Diptera | Lepidoptera |
| Family | Bibionidae | Noctuidae |
| Size | 6-10mm | 38-48 mm wingspan |
| Habitat | Underground | Underground |
| Diet | Root Feeders | Wood Feeders |
| Regions | Europe | Europe, Central Asia |
| 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.
Dot Moth
A dark bluish-black moth with a conspicuous white kidney-mark on each forewing. Its boldly marked appearance makes it easy to identify at light traps.
Did You Know?
The white dot on its dark wings is so prominent it can be identified from several feet away.