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The snake has not yet been assessed for the IUCN Red List in terms of conservation, but is listed as endangered in Canada by the Committee on the Status of Endangered Wildlife in Canada. [1] It is listed as a species of special concern in the state of Wisconsin. [2] The blue racer has been on Ontario's Endangered Species List since 1971.
The eastern indigo snake was first described by John Edwards Holbrook in 1842. For many years the genus Drymarchon was considered monotypic with one species, Drymarchon corais, with 12 subspecies, until the early 1990s when Drymarchon corais couperi was elevated to full species status according to the Society for the Study of Amphibians and Reptiles, in their official names list.
The eastern racer, or North American racer (Coluber constrictor), is a species of nonvenomous snake in the family Colubridae. The species is endemic to North America and Central America. Eleven subspecies , including the nominotypical subspecies , are recognized, which as a group are commonly referred to as the eastern racers.
In its Facebook post, the Division of Wildlife mentions a 2004 study that found the snake consumes a greater "diversity of prey," including more than 80 species of fish and 30 species of frog.
Scale patterns help to indicate the species and from the references, it can be verified if the snake species is known to be venomous or not. Species identification using scales requires a fair degree of knowledge about snakes, their taxonomy, snake-scale nomenclature as well as familiarity with and access to scientific literature.
Indigo snakes are large, robust snakes. They have smooth dorsal scales, and several color variations, including a glossy blue-black color. This snake genus, Drymarchon, means "Lord of The Forest". The species in this genus are sexually dimorphic, with the males being larger than the females.
Agkistrodon bilineatus showing the large symmetrical platelike scales on the crown of the head that are characteristic of all species in the genus. The hazy blue eyes are typical of snakes that will soon shed their skin. Members of this genus have a number of features in common. All species have a relatively broad head with short fangs.
The plains garter snake is listed as Least Concern (IUCN 3.1) by the IUCN Red List due to the snake's ability to modify its habitat, its wide distribution and its presumed large population. [8] However, the species is considered to be endangered in Ohio and it is on a state list of endangered species.