Small Rivulet vs Arctic Chironomid Midge
Side-by-side species comparison
| Attribute | Small Rivulet | Arctic Chironomid Midge |
|---|---|---|
| Scientific Name | Perizoma alchemillata | Diamesa mendotae |
| Order | Lepidoptera | Diptera |
| Family | Geometridae | Chironomidae |
| Size | 18-22 mm wingspan | 3-6 mm |
| Habitat | Rivers & Streams | Rivers & Streams |
| Diet | Herbivores | Detritivores |
| Regions | Europe | Arctic Canada, Alaska, Greenland, Scandinavia, alpine regions worldwide |
| 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.
Arctic Chironomid Midge
A slender, non-biting midge with long legs and feathery antennae in males. Larvae are among the first invertebrates to colonize glacial meltwater streams. Adults can be active at temperatures just above freezing.
Did You Know?
Diamesa midges can fly and mate at temperatures as low as minus 6 degrees Celsius, making them among the most cold-tolerant flying insects.