Cream Cahill
Stenonema femoratum (Say, 1823)
Taxonomy
| Kingdom | Animalia |
|---|---|
| Phylum | Arthropoda |
| Subphylum | Hexapoda |
| Class | Insecta |
| Order | Ephemeroptera |
| Family | Heptageniidae |
| Genus | Stenonema |
| Species | Stenonema femoratum (Say, 1823) |
Description
Diagnostic characters
- Ecological class
- Stygoxene
- Realm
- Aquatic
Distribution
Range
Known from two counties across two states.
Continent
North America
Country
United States
States and provinces
Arkansas, Illinois
Counties
- Arkansas
- Izard
- Illinois
- Monroe
Conservation and management
NatureServe
G5 Secure
National ranks
- Canada
- N4 Apparently Secure
- United States
- N5 Secure
Subnational ranks
- New Brunswick
- SU Unrankable
- Ontario
- S4 Apparently Secure
- Quebec
- SNR Unranked
- Manitoba
- SU Unrankable
- Nova Scotia
- SU Unrankable
- Newfoundland and Labrador
- SU Unrankable
- Saskatchewan
- S4 Apparently Secure
- Northwest Territories
- SU Unrankable
- Illinois
- SNR Unranked
- Pennsylvania
- SNR Unranked
- Georgia
- SNR Unranked
- North Dakota
- SNR Unranked
- Kentucky
- SNR Unranked
- Missouri
- SNR Unranked
- Mississippi
- SNR Unranked
- Ohio
- SNR Unranked
- Tennessee
- SNR Unranked
- New York
- SNR Unranked
- Virginia
- SNR Unranked
- West Virginia
- SNR Unranked
- Iowa
- SNR Unranked
- Wisconsin
- S5 Secure
- Arkansas
- SNR Unranked
- Texas
- SNR Unranked
- Louisiana
- SNR Unranked
- Kansas
- SNR Unranked
- Michigan
- SNR Unranked
- Maine
- SNR Unranked
- Nebraska
- SNR Unranked
- Minnesota
- SNR Unranked
- Indiana
- S5 Secure
- New Hampshire
- SNR Unranked
- Oklahoma
- SNR Unranked
- South Carolina
- SNR Unranked
- North Carolina
- SNR Unranked
- Alabama
- SNR Unranked
- Connecticut
- SNR Unranked
Ranks looked up 2 July 2026. Conservation status changes, and a rank here is as current as that date and no more.
State and federal status
Not listed under the U.S. Endangered Species Act.
References
- McDaniel, V.R. & Smith, K.L. 1976. Cave fauna of Arkansas: selected invertebrate taxa. Journal of the Arkansas Academy of Science 30: 57–60. https://scholarworks.uark.edu/jaas/vol30/iss1/22. details
- Webb, D.W., Taylor, S.J. & Krejca, J.K. 1993. The biological resources of Illinois caves and other subterranean environments. Illinois Natural History Survey, Champaign, Illinois, USA. 143 pp.
This account was last revised 6 September 2026. Conservation ranks were looked up 2 July 2026.
How to cite this account
Stenonema femoratum (Say, 1823). Cave Biology Data Portal, account SP-2959. https://cavebiology.org/species/stenonema-femoratum/ (accessed 22 October 2026).
Data sources and funding are listed in the Acknowledgments.
Spotted something wrong on this page? Report a correction. Accounts are compiled from many sources and corrections from people who know the group are the most useful email we get.