![]() ![]() Females become sexually mature in 3 years in Utah, 2-3 years in Kansas, 2 years in Michigan (Rosen 1991). Eggs hatch in about 6-9 weeks, generally in August or early September. Clutch size is usually 5-28, averages higher in the east than in the west mean clutch size about 6 in Utah, 12 in Kansas, 15 in Michigan (Rosen 1991). Eggs laying peaks early to mid-June in southern Michigan (Rosen 1991), late June or early July in Utah/Colorado. Adult Racers should not be confused with Rubber Boas, which have no dorsal patterns but have stout bodies, blunt tails, and very small eyes.Įggs laying occurs in June or early to mid-July in most areas. Nightsnakes might also be confused with juvenile Racers but they have vertical eye pupils and short tails. The dorsal skin neonates and yearlings is patterned with a series of saddle markings down its back, resembling a Gophersnake but is easily distinguished by not having any pattern on the tail and the eyes are much larger. The dorsal surface has no pattern in adults and is a olive-green. They have relatively large heads and very large eyes with round pupils. Racers are slender and sleek, sometimes growing to over a metre in length. It was recently treated as its own species (Collins 1991) but has since been recognized as just a subspecies (Crother et al. mormon) is the only subspecies of Racer in BC. Hatchling: upper surface with numerous brown blotches on a paler background eyes relatively huge. Total length up to around 190 cm in the northeastern U.S., much smaller (usually less than 90 cm) in the west. Upper surface of adults varies from black (e.g., northeastern U.S) to plain brown or olive (most of western and central U.S.), with a spattering of white, yellowish, buff, or pale blue in some parts of the south-central United States upper scales smooth (unkeeled) belly black (e.g., northeastern U.S.) to plain yellow or cream (western and central U.S.) eyes large anal scale divided nostril bordered by two separate scales usually 15 dorsal scale rows just anterior to the vent lower preocular scale (lowermost scale in front of the eye) wedged between upper lip scales. Status applied to Coluber constrictor mormon. The CDC reports on this element at the species level, as only one subspecies occurs within the province ( Coluber constrictor mormon). A phylogeny and revised classification of Squamata, including 4161 species of lizards and snakes. ![]() BC Conservation Data Centre: Species Summary
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