Common name: Diamond-backed Watersnake
available through www.itis.gov
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 Nerodia rhombifer are found here.
Table last updated 5/25/2018
† Populations may not be currently present.
References: (click for full references)
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.
Revision Date: 10/27/2009
Gregoire, D.R., 2019, Nerodia rhombifer (Hallowell, 1852): U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov/queries/factsheet.aspx?SpeciesID=2577, Revision Date: 10/27/2009, Access Date: 2/20/2019
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.