Smoky Alderfly vs North American Eosentomid

Side-by-side species comparison

Attribute Smoky Alderfly North American Eosentomid
Scientific Name Sialis fuliginosa Eosentomon vermiforme
Order Megaloptera Protura
Family Sialidae Eosentomidae
Size 12-16 mm 0.8-1.4 mm
Habitat Ponds & Lakes Forests
Diet Omnivores Omnivores
Regions Europe North America
Conservation Least Concern Not Evaluated

Smoky Alderfly

A European alderfly distinguished from S. lutaria by its preference for flowing water rather than still ponds. It has dark smoky wings and a blackish body.

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Did You Know?

This alderfly is a reliable indicator of clean running water and is one of the first species to disappear when streams become polluted.

North American Eosentomid

A worm-like proturan found in forest soils of eastern North America. It has a slender elongate body and no trace of eyes.

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Did You Know?

Its species name vermiforme means worm-shaped, reflecting the extremely elongate body plan shared by all proturans.