eastern Massasauga (Sistrurus catenatus)
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 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 is known to or is believed to occur: View All
- USFWS Refuges in which the eastern Massasauga is known to occur:
Necedah National Wildlife Refuge, Upper Mississippi River National Wildlife and Fish Refuge
- Countries in which the the eastern Massasauga is known to occur: Canada
- Additional species information
|Status||Date Listed||Lead Region||Where Listed|
|Great Lakes-Big Rivers Region (Region 3)|
» Candidate Information
» Federal Register Documents
» Conservation Plans
|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|
» 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.