NPSpecies Report Viewer

Report Viewer Configuration Error

The Report Viewer Web Control HTTP Handler has not been registered in the application's web.config file. Add <add verb="*" path="Reserved.ReportViewerWebControl.axd" type = "Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=12.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91" /> to the system.web/httpHandlers section of the web.config file, or add <add name="ReportViewerWebControlHandler" preCondition="integratedMode" verb="*" path="Reserved.ReportViewerWebControl.axd" type="Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=12.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91" /> to the system.webServer/handlers section for Internet Information Services 7 or later.

Loading...

Cancel

Park			Taxon Code
Show Comments?

of

1

|

Word

Excel

PowerPoint

PDF

TIFF file

MHTML (web archive)

CSV (comma delimited)

XML file with report data

Data Feed

Accessible PDF

National Park Service
U.S. Department of the Interior

NPSpecies - Park Species Profile


Crotalus mitchellii
speckled rattlesnake
Lake Mead National Recreation Area
			Record Status: Approved
Occurrence:	Present
Nativeness:	Native
Abundance:	Common

Scientific Name with Authority:		Crotalus mitchellii (Cope, 1861)
Park Preferred Common Name(s):		speckled rattlesnake
Park Synonyms:		Crotalus mitchellii mitchellii, Crotalus mitchelli stephensi, Crotalus mitchelli pyrrhus

Taxonomic Hierarchy:		Kingdom Animalia, Phylum Chordata, Subphylum Vertebrata, Order Squamata, Suborder Serpentes, Family Viperidae, Genus Crotalus, Species Crotalus mitchellii


Management Tags:
Exploitation Concern


Seasonality Tags:
Breeder


Threatened/Endangered Status:		SC
State Species of Concern Status:
Ozone-sensitive Status:
NatureServe Global Rank:
NatureServe State Rank:
Evidence:		1 Observations, 1 Vouchers, 4 Data Store References, 0 External Links


Other Parks Where Species is Listed:
Death Valley National Park	Grand Canyon National Park
Joshua Tree National Park	Mojave National Preserve
Organ Pipe Cactus National Monument	Tonto National Monument


Last Modified Date:	6/15/2011

NPSpecies - The National Park Service biodiversity database. IRMA Portal version.https://irma.nps.gov/npspecies. Accessed 1/13/2026 3:12:17 PM

NatureServe Global Rank and State Rank

NatureServe. 2017. NatureServe Web Service. Arlington, VA. U.S.A. Available http://services.natureserve.org. Accessed: 12/4/2017. Updated quarterly.

This information is provided by NatureServe (www.natureserve.org) and its network of natural heritage member programs, a leading source of information about rare and endangered species, and threatened ecosystems.


		Species Profile		Page 1 of 1		1/13/2026 3:12:17 PM