Eastern massasauga
species of snake (rattlesnake; Sistrurus catenatus)
The eastern massasauga (Sistrurus catenatus) is a species of rattlesnake found in eastern North America, from southern Ontario, Canada, eastern regions of the Midwestern states, and parts of the Great Lakes region in the United States. Like all rattlesnakes, it is a pit viper and is venomous; it is the only species of venomous snake in Ontario.
Taxonomy
Three subspecies of Sistrurus catenatus were recognized for more than a century, although research published in 2011 elevated two subspecies Sistrurus catenatus catenatus and Sistrurus catenatus tergeminus, to full species: the eastern massasauga (Sistrurus catenatus) and the western massasauga (Sistrurus tergeminus). The status of the third subspecies was somewhat unresolved and it is tentatively recognized as the desert massasauga (Sistrurus tergeminus edwardsii) by some, or synonymized with the western massasauga (Sistrurus tergeminus) by others. It is currently thought that eastern massassauga is monotypic, i.e., has no recognized subspecies.
Etymology and nomenclature
The generic name Sistrurus is from the Latin sistrum (or Greek seistron), a "rattle", a form of musical instrument, and oura Greek meaning "tail". The name catenatus is derived from the Latin word catena meaning "chain", in combination with the suffix atus meaning "provided with", which likely alludes to the dorsal color pattern (or possibly the rattle).
The standardized English name of Sistrurus catenatus is eastern massasauga. The Native American word, "massasauga", means "great river-mouth" in the Ojibwe language and was probably given to describe grasslands surrounding the river deltas in Ojibwe country.
Other colloquial names for the eastern massasauga include: massasauga rattlesnake, pine rattler, massasauga rattler (Ontario), black massasauga, black rattler, black snapper, gray rattlesnake (Iowa), little grey rattlesnake (Canada), muck rattler, prairie rattlesnake, spotted rattler, swamp rattler, dwarf prairie rattlesnake, eastern massasauga great adder, ground rattlesnake, Kirtland's rattlesnake, little black rattlesnake, Michigan point rattler (Michigan), prairie massasauga, rattlesnake, small prairie rattlesnake, snapper, swamp massasauga, swamp rattlesnake, and triple-spotted rattlesnake.
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The date and method of observation matter as much as the stated conclusion, especially where classification or consensus has changed. The source revision retrieved here is dated Sep 17, 2026. The linked authority identifier is Q1371648. None of the 0 selected statements returned an explicit reference. The first chronological checks are 2011.
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This entry incorporates text from “Eastern massasauga” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.