Large Whirligig Beetle vs Marbled Sedge
Side-by-side species comparison
| Attribute | Large Whirligig Beetle | Marbled Sedge |
|---|---|---|
| Scientific Name | Dineutus americanus | Hydropsyche contubernalis |
| Order | Coleoptera | Trichoptera |
| Family | Gyrinidae | Hydropsychidae |
| Size | 10-13 mm | 12-18 mm |
| Habitat | Rivers & Streams | Rivers & Streams |
| Diet | Omnivores | Omnivores |
| Regions | North America | Europe |
| Conservation | Least Concern | Least Concern |
Large Whirligig Beetle
The largest North American whirligig beetle, found on the surface of streams and rivers. It produces defensive chemicals that smell like apples when disturbed.
Did You Know?
When alarmed, large groups scatter in erratic spirals, creating a confusing display that deters predators.
Marbled Sedge
A net-spinning caddisfly with distinctly marbled wing patterns. It is common in larger European rivers and is tolerant of moderate levels of organic enrichment.
Did You Know?
Marbled sedge larvae are territorial and will aggressively defend their net-spinning sites from rivals.