American Grannom vs Reindeer Nose Bot Fly
Side-by-side species comparison
| Attribute | American Grannom | Reindeer Nose Bot Fly |
|---|---|---|
| Scientific Name | Brachycentrus americanus | Cephenemyia trompe |
| Order | Trichoptera | Diptera |
| Family | Brachycentridae | Oestridae |
| Size | 9-13 mm | 14-18 mm |
| Habitat | Rivers & Streams | Heathland |
| Diet | Omnivores | Omnivores |
| Regions | North America | Scandinavia, Finland, northern Russia, Siberia |
| Conservation | Least Concern | Least Concern |
American Grannom
A case-building caddisfly whose larvae attach their cases to rocks in fast current and filter-feed. Cases are chimney-shaped and built from silk and plant fragments.
Did You Know?
Larvae can switch between filter-feeding and scraping algae depending on current speed.
Reindeer Nose Bot Fly
A large, hairy, bee-like fly that squirts live larvae into the nostrils of reindeer. The larvae develop in the nasal passages and throat of the host. Adults resemble bumblebees and do not feed.
Did You Know?
This fly is one of the fastest insects in the world for its size, capable of pursuing running reindeer at speeds exceeding 40 kilometers per hour.