American Sand Mayfly vs Dark Blue Quill

Side-by-side species comparison

Attribute American Sand Mayfly Dark Blue Quill
Scientific Name Dolania americana Paraleptophlebia mollis
Order Ephemeroptera Ephemeroptera
Family Behningiidae Leptophlebiidae
Size 10-15 mm body 6-9 mm
Habitat Rivers & Streams Rivers & Streams
Diet Omnivores Detritivores
Regions North America North America
Conservation Least Concern Least Concern

American Sand Mayfly

Holds the record for the shortest adult lifespan of any insect — females live less than five minutes as adults, just long enough to mate and lay eggs before dying.

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Did You Know?

Female Dolania americana mayflies live less than five minutes as adults — they emerge, mate, lay eggs, and die faster than most people take a coffee break.

Dark Blue Quill

A small dusky-winged mayfly of Appalachian headwater streams. Nymphs are slow crawlers among leaf debris in gentle currents.

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Did You Know?

It is one of the earliest mayflies to emerge each spring, sometimes hatching when snow still lines the streambanks.