eastern Massasauga (Sistrurus catenatus)

Candidate Info | Federal Register | Conservation Plans | Petitions | Life History

Listing Status:   

General Information

Massasaugas are small snakes with thick bodies, heart-shaped heads and vertical pupils. The average length of an adult is about 2 feet. Adult massasaugas are gray or light brown with large, light-edged chocolate brown blotches on the back and smaller blotches on the sides. The snake's belly is marbled dark gray or black and there is a narrow, white stripe on its head. Its tail has several dark brown rings and is tipped by gray-yellow horny rattles. Young snakes have the same markings, but are more vividly colored. The head is a triangular shape and the pupils are vertical.

  • States/US Territories in which the eastern Massasauga, Wherever found is known to or is believed to occur:  Illinois , Indiana , Iowa , Michigan , Minnesota , New York , Ohio , Pennsylvania , Wisconsin
  • US Counties in which the eastern Massasauga, Wherever found is known to or is believed to occur:  View All
  • USFWS Refuges in which the eastern Massasauga, Wherever found is known to occur:  Necedah National Wildlife Refuge, Upper Mississippi River National Wildlife and Fish Refuge
  • Countries in which the the eastern Massasauga, Wherever found is known to occur:  Canada
  • Additional species information
 
Current Listing Status Summary
Status Date Listed Lead Region Where Listed
Great Lakes-Big Rivers Region (Region 3) Wherever found

» Candidate Information

Candidate Assessments
Candidate Notice of Review Documents
Date Citation Page Title
11/22/2013 Review of Native Species That are Candidates for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions
12/05/2014 Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions
09/12/2006 Review of Native Species That Are Candidates or Proposed for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions
06/13/2002 Endangered and Threatened Wildlife and Plants; Review of Species That Are Candidates or Proposed for Listing as Endangered or Threatened; Annual Notice of Findings on Recycled Petitions; Annual Description of Progress on Listing Actions
10/30/2001 ETWP; Review of Plant and Animal Species That Are Candidates or Proposed for Listing as Endangered or Threatened,Annual Notice of Findings on Recycled Petitions, and Annual Description of Progress on Listing Actions; Proposed Rule
10/26/2011 Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions
12/06/2007 Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions; Proposed Rule
10/25/1999 Review of Plant and Animal Taxa That Are Candidates or Proposed for Listing as Endangered or Threatened; Annual Notice of Findings on Recycled Petitions; Annual Description of Progress on Listing Actions
12/30/1982 Review of Vertebrate Wildlife for Listing as End. or Thr. Species
11/09/2009 Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions
05/11/2005 Endangered and Threatened Wildlife and Plants; Review of Native Species That Are Candidates or Proposed for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions; Proposed Rule
11/21/2012 Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions
12/10/2008 Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions; Proposed Rule
11/10/2010 Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions; Proposed Rule
05/04/2004 Review of Species That Are Candidates or Proposed for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions

» Federal Register Documents

Federal Register Documents
Date Citation Page Title
12/06/2007 72 FR 69034 69106 Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions; Proposed Rule
12/10/2008 73 FR 75176 75244 Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions; Proposed Rule
11/22/2013 77 FR 70103 70162 Review of Native Species That are Candidates for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions
11/21/2012 77 FR 69993 70060 Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions
05/11/2005 70 FR 24870 24934 Endangered and Threatened Wildlife and Plants; Review of Native Species That Are Candidates or Proposed for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions; Proposed Rule
10/30/2001 66 FR 54808 54832 ETWP; Review of Plant and Animal Species That Are Candidates or Proposed for Listing as Endangered or Threatened,Annual Notice of Findings on Recycled Petitions, and Annual Description of Progress on Listing Actions; Proposed Rule
10/25/1999 64 FR 57535 57547 Review of Plant and Animal Taxa That Are Candidates or Proposed for Listing as Endangered or Threatened; Annual Notice of Findings on Recycled Petitions; Annual Description of Progress on Listing Actions
12/30/1982 47 FR 58454 58460 Review of Vertebrate Wildlife for Listing as End. or Thr. Species
12/05/2014 79 FR 72449 72497 Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions
11/09/2009 74 FR 57804 57878 Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions
09/30/2015 80 FR 58688 58701 Threatened Species Status for the Eastern Massasauga Rattlesnake; Proposed rule
06/13/2002 67 FR 40657 40679 Endangered and Threatened Wildlife and Plants; Review of Species That Are Candidates or Proposed for Listing as Endangered or Threatened; Annual Notice of Findings on Recycled Petitions; Annual Description of Progress on Listing Actions
10/26/2011 76 FR 66370 66439 Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions
09/12/2006 71 FR 53756 53835 Review of Native Species That Are Candidates or Proposed for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions
05/04/2004 69 FR 24876 24904 Review of Species That Are Candidates or Proposed for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions
11/10/2010 75 FR 69222 69294 Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions; Proposed Rule

» Conservation Plans

Candidate Conservation Agreements with Assurances (CCAA): (learn more)
CCAA Plan Summaries
Eastern massasauga rattlesnake CCAA for Lower Chippewa River Bottoms, WI
Eastern massasauga rattlesnake CCAA for Rome State Nature Preserve, Ashtabula County, Ohio

» Petitions

» Life History

No Life History information has been entered into this system for this species.

» Other Resources

NatureServe Explorer Species Reports -- NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and Canada. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common plants and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.

ITIS Reports -- ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.

FWS Digital Media Library -- The U.S. Fish and Wildlife Service's National Digital Library is a searchable collection of selected images, historical artifacts, audio clips, publications, and video.