Small Rivulet vs Rose Slug Sawfly
Side-by-side species comparison
| Attribute | Small Rivulet | Rose Slug Sawfly |
|---|---|---|
| Scientific Name | Perizoma alchemillata | Endelomyia aethiops |
| Order | Lepidoptera | Hymenoptera |
| Family | Geometridae | Tenthredinidae |
| Size | 18-22 mm wingspan | 4-5 mm |
| Habitat | Rivers & Streams | Underground |
| Diet | Herbivores | Herbivores |
| Regions | Europe | Europe, introduced to North America |
| Conservation | Least Concern | Least Concern |
Small Rivulet
A delicate small moth found in damp habitats where hemp agrimony grows. The larvae feed inside the flowers. Has subtle grey and white wing markings.
Did You Know?
The larvae develop entirely within hemp agrimony flower heads, emerging only to pupate.
Rose Slug Sawfly
A small, dark sawfly whose slug-like larvae skeletonize rose leaves by feeding on the upper leaf surface. Larvae are pale yellowish-green and covered in a thin mucus layer.
Did You Know?
Damaged rose leaves develop a characteristic translucent, papery appearance as only the lower epidermis remains after larval feeding.