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 Malaclemys terrapin are found here.
Table last updated 9/30/2019
† Populations may not be currently present.
References: (click for full references)
Babcock, H. L. 1926. The diamond-back terrapin in Massachusetts. Copeia. 150: 101-104.
Benavides, G., D. Renoud, and K. Wasson. 2002. Least wanted aquatic invaders: Diamond-back Terrapin (Malaclemys terrapin
). The Elkhourn Souugh [online]
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.
McCoy, C. J. 1982. Amphibians and Reptiles in Pennsylvania: Checklist, bibliography, and atlas of distribution. Special puplication of Carnegie Museum of Natural History. Volume 6. Carnegie Museum of Natural History, Pittsburgh.
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.