Eastern Massasauga Rattlesnake Range Map

Learn about the eastern massasauga rattlesnake, Michigan's only venomous snake and one of two rattlesnakes in the Great Lakes region. See its distribution, life history, ecology, threats and conservation status.

Download scientific diagram Range map for the eastern massasauga. Shaded counties represent the eastern massasauga's historic range. The line represents a southwest to northeast axis along which

The Eastern Massasauga Sistrurus catenatus is a species of pygmy rattlesnake native to Illinois, its southern and western range limit. Eastern Massasauga is a small rattlesnake species, less than 100 cm in total length with 9 enlarged scales plates on the head. Topographic map showing the area near Carlyle, IL in 1948, prior to the

COMMON NAME Eastern Massasauga Rattlesnake . AUTHOR Phil Borsdorf and Nathaniel Slaton, Illinois Department of Natural Resources. DATE March 2024. SPECIES PHOTO 2 1. Species Description and Conservation Status Range Map . This figure shows the distribution of EMR populations throughout the USFWS management units across

The eastern massasauga averages 18 to 30 inches in length. It has a heat-sensitive pit on each side of the head between the eye and the nostril. Its head is attened and much wider than the neck. The pupil of each eye is vertically elliptical. A rattle is present at the tip of the tail. Scales are keeled ridged.

The eastern massasauga was listed as Federally threatened in 2016. Description. The massasauga is one of Minnesota's two venomous snakes. It is of medium size, averaging 47-76 cm 18.5-30 in. long. The massasauga has a grayish-brown background overlaid by a pattern of dark brown blotches with 2 or 3 rows of smaller spots along each side.

The eastern massasauga rattlesnake is a small pit viper that occurs in the northern midwest United States and Ontario, Canada. Originally believed to be a subspecies of western massasauga rattlesnake, genetic analyses have since demonstrated it to be a distinct species that was reclassified in 2011 as Sistrurus catenatus.. Eastern massasaugas were listed as threatened under the Endangered

The eastern Massasauga Sistrurus catenatus is a pygmy rattlesnake most adults are only 55 to 75 centimetres long. It is brownish with saddle- or butterfly-shaped darker brown blotches on the back that alternate with smaller blotches on the sides. View an interactive map of the known ranges of Massasauga rattlesnakes in Ontario

Eastern Massasauga Sistrurus catenatus is a State Endangered Species and a Federally Threatened Species.This rattlesnake is strongly associated with floodplain habitats along medium to large rivers, especially near river confluences, where they primarily occupy open canopy wetlands, such as sedge meadows, fresh wet meadows, shrub-carrs, and adjacent upland prairies, floodplain forests, and

Movements and Habitat Utilization by the Massasauga, Sistrurus catenatus catenatus. J. Herpetol. 16162-171. Seigel, R. A. 1986. Ecology and Conservation of an Endangered Rattlesnake, Sistrurus catenatus, in Missouri, U. S. A. Biol. Conserv. 35333-346. Drawing by Jean Gawalt. Map adapted from Conant and Collins 1998 and Harding 1997