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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
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Other features
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Contact information
For information on Wisconsin's rare animals, contact:
Rich Staffen
Conservation Biologist

Mapleleaf (Quadrula quadrula)



Mapleleaf (Quadrula quadrula) a State Special Concern Species, prefers medium to large rivers and reservoirs with a mud, sand, or gravel bottom. It is found in the western part of the state and can be locally abundant. Its fish hosts include channel and flathead catfish as well as brown and black bullhead.

State status

Status and Natural Heritage Inventory documented occurrences in Wisconsin

The table below provides information about the protected status - both state and federal - and the rank (S and G Ranks) for Mapleleaf (Quadrula quadrula). See the Working List Key for more information about abbreviations. Counties shaded blue have documented occurrences for this species in the Wisconsin Natural Heritage Inventory database. The map is provided as a general reference of where occurrences of this species meet NHI data standards and is not meant as a comprehensive map of all observations.

Note: Species recently added to the NHI Working List may temporarily have blank occurrence maps.

Documented locations of Quadrula quadrula in the Natural Heritage Inventory Database as of July 2015.
Summary Information
State StatusSC/P
Federal Status in Wisconsinnone
State RankS3
Global RankG5
Tracked by NHIY

Species guidance

A guidance document is not available at this time. Use the information from the other tabs and contact local biologists, as needed, to develop management and avoidance strategies.




Photo by Lisie Kitchell, WDNR.


Photo ©  Illinois Natural History Survey.


Photo by Lisie Kitchell, WDNR.

Last revised: Tuesday, February 19, 2019