coluber constrictor foxii conservation status in michigan

Male racers can be distinguished from the female of the species in that the tail is longer with a wide base, sometimes even a bulge. The coloring fades as the snake grows older and at 30 inches all traces have usually disappeared (Conant and Collins, 1998). Juvenile racers are strongly patterned with grays, browns, and reds. The average adult length ranges from 90-190 cm. The chin and throat areas vary from white to yellowish progressing back to a ventrum that could be black, dark gray, light blue, white, cream or yellow. The head is narrow but still wider than the neck with very distinct brow ridges. The normal coloration is a very dark and uniform dorsum with variations ranging from black, bluish, gray, to olive brown. There are 17 scale rows midbody, and 15 near the tail. The mature racer has very smooth shiny scales with a divided anal plate (Conant and Collins, 1998). Holotype: USNM priapus: SE states and north and west in Mississippi valley to S Indiana and SE Oklahoma, Lower Florida Keys.

paludicola: Everlglades, SE Florida, upper Florida Keys, E Florida. Seems to intergrade with flaviventris in New Mexico and Texas. oaxacae: S Texas and Tamaulipas to C Veracruz isolated records in Nuevo León, Coahuila, Durango, Colima, Oaxaca, Chiapas, and Guatemala. latrunculus: SE Louisiana north along the east side of the Mississippi to N Missouri. valleys in Florida panhandle and adjacent Georgia. helvigularis: Lower Chipola and Apalachicola R. foxii: S Ontario, NW Ohio to E Iowa and SE Minnesota Wisconsin an isolated population in Menominee Co., Michigan (intergrades with flaviventris). flaviventris: Montana, W North Dakota, east to Iowa and south to Texas, SW Louisiana Arkansas, Colorado, Kansas, Missouri, Michigan, Wisconsin, Oklahoma isolated populations in New Mexico and Texas. etheridgei: WC Louisiana, adjacent Texas. anthicus: S Arkansas, Louisiana, E texas. Saskatchewan) USA (Washington, Oregon, California, Illinois, New Mexico, Texas, Oklahoma, Kansas, Nebraska, Minnesota, Colorado, Wyoming, Montana, South Dakota, Idaho, Utah, Iowa, Missouri, Arkansas, Louisiana, Mississippi, Alabama, Georgia, Florida, South Carolina, North Carolina, Virginia, West Virginia, Kentucky, Indiana, Illinois, Wisconsin, Ohio, Maryland, Pennsylvania, New Jersey, New York, Rhode Island, Connecticut, Massachusetts, S New Hampshire, S Vermont, S Maine Tennessee ) E/SE Mexico (Yucatan, Durango), Belize, N Guatemala constrictor: S Maine to NE Alabama. oaxaca, the Mexican racer, has isolated populations in New Mexico, but its main range is from south Texas to Veracruz.īiogeographic Regions: nearctic (Native )ĭistribution: S Canada (incl. etheridgei, the tan racer inhabits Louisiana and Texas.

anthicus, ranges from south Arkansas to Louisiana, also eastern Texas. The western yellow-bellied racer is found west of the Rocky Mountains, from southern California and Nevada through through western Colorado, Oregon, and Washington and into southern British Columbia. flaviventris, is found from extreme southern Saskatchewan southeast through Montana, western North Dakota, east to Iowa and south to Texas. latrunculus, the blackmask racer, occurs in southeastern Louisiana and adjacent Mississippi. helvigularis, occurs only in the lower Chipola and Appalachicola River valleys in Georgia and Florida. paludicola, is found only in southern Florida. It also occurs on some of the Florida Keys. priapus, the southern black racer, ranges from southern Indiana and Illinois and southeastern North Carolina to central Florida and southern Arkansas. foxii, is found from Michigan, Wisconson, and Minnesota south to Ohio, Indiana, and Illinois. Different racer subpopulations include: The northern black racer, Coluber constrictor constrictor, ranges from southern Maine and central New York south to northern Georgia and Alabama. Racers occur from southern Canada to Guatemala, with considerable individual and local variation in regions where two or more subspecies intergrade (Conant and Collins, 1998).

Coluber constrictor foxii conservation status in michigan