Common name: Mississippi Map Turtle
available through www.itis.gov
Native Range: Texas, Louisiana, Mississippi and Arkansas north along the Missouri, Mississippi, and Ohio river drainages to North Dakota, Minnesota, Wisconsin, Illinois, and Indiana. Isolated populations occur in central Ohio and northern Indiana (Ernst et al., 1994; Conant and Collins, 1998).
Hydrologic Unit Codes (HUCs) Explained
Puerto Rico &
Interactive maps: Point Distribution Maps
Table 1. States with nonindigenous occurrences, the earliest and latest observations in each state, and the tally and names of HUCs with observations†. Names and dates are hyperlinked to their relevant specimen records. The list of references for all nonindigenous occurrences of Graptemys pseudogeographica kohnii are found here.
Table last updated 9/19/2021
† Populations may not be currently present.
Means of Introduction: Pet release.
Status: Reported from Virginia.
Impact of Introduction: Negligible since the species is not established in Virginia (Mitchell, 1994; Ernst et al., 1997). Because G. pseudographica is omnivorous, eating mollusks, insects, crayfish, aquatic plants and more, an established population could influence the food web (Ernst et al., 1994).
References: (click for full references)
Conant, R. and J. T. Collins. 1998. A field guide to reptiles and amphibians. Eastern and Central North America. Third Edition, Expanded. Houghton and Mifflin Co. Boston.
Crother, B.I. (chair). Committee on Standard and English and Scientific Names. 2008. Scientific and standard English names of amphibians and reptiles of North America north of Mexico, with comments regarding confidence in our understanding. Society for the Study of Amphibians and Reptiles Herpetological Circular. No. 37. iii + 86p.
Ernst, C. H., J. E. Lovich, and R. W. Barbour. 1994. Turtles of the United States and Canada. Smithsonian Institution Press, Washington and London.
Mitchell, J. C. 1994. The reptiles of Virginia. Smithsonian Institution Press, Washingon, D. C.
Revision Date: 10/28/2009
McKercher, E., 2021, Graptemys pseudogeographica kohnii (Baur, 1890): U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov/queries/FactSheet.aspx?SpeciesID=1241, Revision Date: 10/28/2009, Access Date: 9/19/2021
This information is preliminary or provisional and is subject to revision. It is being provided to meet the need for timely best science. The information has not received final approval by the U.S. Geological Survey (USGS) and is provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the information.