Spotted Willow Leaf Beetle vs Eastern Net-Winged Midge

Side-by-side species comparison

Attribute Spotted Willow Leaf Beetle Eastern Net-Winged Midge
Scientific Name Chrysomela knabi Blepharicera tenuipes
Order Coleoptera Diptera
Family Chrysomelidae Blephariceridae
Size 6-8 mm 6-10 mm
Habitat Mountains Mountains
Diet Herbivores Predators
Regions Western North America North America
Conservation Least Concern Least Concern

Spotted Willow Leaf Beetle

A dark metallic blue-black beetle with an oval body found on willows in western North America. Adults and larvae feed on willow foliage near mountain streams.

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Did You Know?

This species is adapted to high-altitude habitats and is commonly found above 2,000 meters elevation in the Rocky Mountains.

Eastern Net-Winged Midge

A net-winged midge whose larvae cling to rocks in the fastest torrents using ventral suction discs. Adults have characteristically divided wings.

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Did You Know?

Larvae can maintain their grip on rocks in currents exceeding two meters per second using six suction cups.