High-altitude Midge vs Pacific Spiketail

Side-by-side species comparison

Attribute High-altitude Midge Pacific Spiketail
Scientific Name Diamesa latitarsis Cordulegaster dorsalis
Order Diptera Odonata
Family Chironomidae Cordulegastridae
Size 2-4 mm body length 65-75 mm
Habitat Mountains Forests
Diet Omnivores Omnivores
Regions Alps, Carpathians, Scandinavia North America
Conservation Least Concern Least Concern

High-altitude Midge

A small, dark midge whose larvae inhabit the coldest alpine streams. It has unusually broad tarsi adapted for walking on wet rocks.

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Did You Know?

Its broad feet allow it to grip wet rocks in fast-flowing glacial streams.

Pacific Spiketail

The only spiketail dragonfly on the Pacific coast of North America. It has a dark brown body with yellow dorsal spots and patrols shaded forest seepages.

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Did You Know?

It is the only spiketail species found west of the Rocky Mountains in North America.