Granulated Ground Beetle vs Light Cahill Mayfly
Side-by-side species comparison
| Attribute | Granulated Ground Beetle | Light Cahill Mayfly |
|---|---|---|
| Scientific Name | Carabus granulatus | Heptagenia solitaria |
| Order | Coleoptera | Ephemeroptera |
| Family | Carabidae | Heptageniidae |
| Size | 16-23 mm | 9-13 mm |
| Habitat | Wetlands | Rivers & Streams |
| Diet | Omnivores | Omnivores |
| Regions | Western Europe, Central Europe, Northern Europe, Eastern Europe | North America |
| Conservation | Least Concern | Least Concern |
Granulated Ground Beetle
A widespread dark bronze ground beetle with distinctly ridged and granulated wing cases. It thrives in damp habitats near water and marshes.
Did You Know?
It is one of the few ground beetles that can swim short distances across puddles and streams.
Light Cahill Mayfly
A pale-colored mayfly highly prized by fly fishers for imitating hatches. Nymphs prefer moderate current over gravel substrates.
Did You Know?
The Light Cahill dry fly pattern, designed to mimic this species, has been used since the 1880s.