Share your observations

Share your observations of plants or non-game animals with the Natural Heritage Inventory

Rare animals
Find rare and non-game animals.
Rare plants
Learn about plants on the Natural Heritage Working List.
Rare lichens
Discover Wisconsin's lichens.
Natural communities
Explore Wisconsin's natural communities.
Other features
Discover unique resources.
Eagle license plate

Help care for rare plants and animals by ordering an Endangered Resources plate.

Contact information
For information on Wisconsin's rare vertebrate animals, contact:
Rich Staffen
Conservation Biologist
For information on Wisconsin's rare invertebrates, contact:
Jay Watson
Conservation Biologist

Wisconsin's rare mayflies

Mayflies on Wisconsin's Natural Heritage Working List – last revised May 2016. Life history, where they are found in the state, photos and management information is available for many of these species. Please consider sharing your observations [exit DNR] with the Wisconsin Natural Heritage Inventory

Click on the table headings to sort the table or sort taxonomically. Choose a species from the list to explore information for that animal. View the table key.
Scientific Name Common Name Global
WWAP Mapped in NHI
Acanthametropus pecatonica Pecatonica River Mayfly G2G4 S1 END SGCN Y
Ameletus lineatus A Mayfly G5 S2S3 SC/N SGCN Y
Ameletus subnotatus A Mayfly G5 SU r-SIN N
Cercobrachys fox Fox Small Square-gilled Mayfly G3G4 S2S3 SC/N SGCN Y
Cercobrachys lilliei Wisconsin Small Square-gilled Mayfly G2 S1S2 SC/N SGCN Y
Cercobrachys winnebago Winnebago Small Square-gilled Mayfly G3G4 S1S2 SC/N SGCN Y
Dolania americana American Sand Burrowing Mayfly G4 S1S2 SC/N SGCN Y
Drunella cornuta A Spiny Crawler Mayfly G5 S2S3 SC/N SGCN Y
Eurylophella aestiva A Spiny Crawler Mayfly G5 S2S3 SC/N SGCN Y
Homoeoneuria ammophila A Brush-legged Mayfly G4 S2 SC/N SGCN Y
Maccaffertium pulchellum A Flat-headed Mayfly G5 S2S4 SC/N SGCN Y
Macdunnoa persimplex A Flat-headed Mayfly G4 S1S2 SC/N SGCN Y
Metretopus borealis A Cleft-footed Minnow Mayfly G5 S1S2 SC/N SGCN Y
Neoephemera bicolor A Large Square-gilled Mayfly G1G2 S1S2 SC/N SGCN Y
Nixe inconspicua A Flat-headed Mayfly G5 SU r-SIN N
Paracloeodes minutus A Small Minnow Mayfly G5 S1S2 SC/N SGCN Y
Pentagenia vittigera A Common Burrower Mayfly G5 S2S3 SC/N SGCN Y
Plauditus cestus A Small Minnow Mayfly G5 S2S3 SC/N SGCN Y
Rhithrogena undulata A Flat-headed Mayfly G4Q S2S3 SC/N SGCN Y
Sparbarus lacustris A Small Square-gilled Mayfly G4 SU r-SIN N
Sparbarus maculatus A Small Square-gilled Mayfly G5 SU r-SIN N
Sparbarus nasutus A Small Square-gilled Mayfly G3G4 SU r-SIN N
Spinadis simplex A Flat-headed Mayfly G2G4 S1 END SGCN Y

Rank and status: To learn more about species rank and status, see the working list key. WWAP: (Wisconsin Wildlife Action Plan): SGCN (Species of Greatest Conservation Need) and monitoring and ranking SIN (Species with Information Needs). Mapped in NHI: (Natural Heritage Inventory): Y = Observations of these species are mapped into the NHI database.

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Last revised: Thursday, December 22, 2022