Burrowing Mayfly vs Midge

Side-by-side species comparison

Attribute Burrowing Mayfly Midge
Scientific Name Hexagenia limbata Chironomus plumosus
Order Ephemeroptera Diptera
Family Ephemeridae Chironomidae
Size 18-32 mm body 8-12 mm
Habitat Ponds & Lakes Ponds & Lakes
Diet Omnivores Detritivores
Regions North America Europe, Asia, North America
Conservation Least Concern Least Concern

Burrowing Mayfly

Creates massive synchronized emergences so dense they appear on weather radar. Billions emerge simultaneously from lake bottoms where nymphs burrowed for up to two years.

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Did You Know?

Mayfly emergences along the Mississippi River are so massive they show up on Doppler weather radar — billions of insects rising simultaneously look like approaching thunderstorms.

Midge

A delicate, mosquito-like fly with feathery antennae that forms enormous mating swarms at dusk. Despite their appearance, non-biting midges are completely harmless.

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Did You Know?

Midge swarms can be so dense near lakes that they appear on weather radar, and the biomass of emerging adults can exceed one ton per hectare of lake surface per year.