Spotted Grass Moth vs March Brown Mayfly
Side-by-side species comparison
| Attribute | Spotted Grass Moth | March Brown Mayfly |
|---|---|---|
| Scientific Name | Rivula propinqualis | Rhithrogena germanica |
| Order | Lepidoptera | Ephemeroptera |
| Family | Crambidae | Heptageniidae |
| Size | 15-20 mm wingspan | 10-14 mm |
| Habitat | Ponds & Lakes | Rivers & Streams |
| Diet | Omnivores | Omnivores |
| Regions | Eastern North America | Europe |
| Conservation | Least Concern | Near Threatened |
Spotted Grass Moth
A tiny yellowish moth with a distinctive dark spot on each forewing. It is extremely common in damp grassy habitats across eastern North America.
Did You Know?
Despite being one of the most abundant moths in its range, it is so small that most people never notice it.
March Brown Mayfly
A spring-emerging mayfly with a brownish body and two tails, historically important to European fly fishing. Its flat nymphs cling to rocks in fast water.
Did You Know?
This species has declined significantly in many European rivers due to pollution and is now considered an indicator of water quality.