Western Grannom Caddis vs Clubtail Dragonfly
Side-by-side species comparison
| Attribute | Western Grannom Caddis | Clubtail Dragonfly |
|---|---|---|
| Scientific Name | Brachycentrus occidentalis | Ophiogomphus cecilia |
| Order | Trichoptera | Odonata |
| Family | Brachycentridae | Gomphidae |
| Size | 9-12 mm | 50-55 mm |
| Habitat | Rivers & Streams | Rivers & Streams |
| Diet | Omnivores | Predators |
| Regions | Europe | Europe |
| Conservation | Least Concern | Near Threatened |
Western Grannom Caddis
A widespread European caddisfly forming mass emergences in spring on alkaline rivers. Larvae build four-sided tapering cases and filter-feed in riffles.
Did You Know?
Spring Grannom hatches on English chalk streams can darken the sky with millions of emerging adults.
Clubtail Dragonfly
A green-eyed dragonfly with a club-shaped abdomen tip found along clean rivers.
Did You Know?
Its larvae bury themselves in clean sand and are indicators of excellent water quality.