Macroinvertebrate Key
Midge Fly
Facts
Almost 2000 species in North America
Are found in all but the most polluted aquatic conditions
Presence in large numbers may indicate organic enrichment
Description
Up to 1/2 inches long
One pair of tiny, fleshy legs below the head and one pair on the back end
The back end sometimes has a tiny pair of extensions that look like brushes
A thin dark line (digestive tract) can be seen inside the body
Thin, slightly curved, segmented and inch-worm-like body
Distinct, often dark head
Words Found in Glossary
aquatic
distinct
organic enrichment
segmented
species
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