Cold-water Glacier Midge vs Sand Fly Caddis

Side-by-side species comparison

Attribute Cold-water Glacier Midge Sand Fly Caddis
Scientific Name Diamesa cinerella Glossosoma intermedium
Order Diptera Trichoptera
Family Chironomidae Glossosomatidae
Size 3-4 mm body length 6-9 mm
Habitat Rivers & Streams Rivers & Streams
Diet Detritivores Omnivores
Regions Europe, Alps, Scandinavia North America
Conservation Least Concern Least Concern

Cold-water Glacier Midge

A cold-adapted midge found in high-altitude streams fed by snowmelt. Its larvae are among the first colonizers of newly formed glacial streams.

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Did You Know?

Adults can emerge and fly at temperatures just above freezing.

Sand Fly Caddis

A small caddisfly whose larvae build distinctive tortoise-shell-shaped stone cases. They are important grazers on algae-covered stream rocks.

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Did You Know?

Glossosoma larvae abandon and rebuild their dome-shaped cases each time they need to move to a new grazing site.