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This is a list of snake species known to be found in the U.S. state of Illinois. [1] Concerns and listed statuses come from the Illinois Endangered Species Protection Board's February 2011 Checklist of endangered and threatened animals and plants of Illinois and the Illinois Natural History Survey's website.
Like D. p. punctatus, the Mississippi ringneck snake characteristically attains a maximum length of 44.5 centimetres (17.5 in). The head is black and the body dark gray, separated by a golden ring at the neck. The ventral side displays a yellow belly, transitioning to dark orange under tail. [2]
Southern ringneck snake, Diadophis p. punctatus Diadophis punctatus , commonly known as the ring-necked snake or ringneck snake , is a rather small, harmless species of colubrid snake found throughout much of the United States, as well as south in Central Mexico and as far north as Quebec, Canada .
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The northern ringneck snake has a body color from bluish grey to black, with a complete narrow yellow or orange ring around its neck and an underside matching the ring and generally lacking any dark spotting or patterning. The complete ring and lack of large dark spots on the belly differentiate it from other subspecies of D. punctatus. [5]
Snakes are venomous, not poisonous, and can use neurotoxic, hemotoxic or cytotoxic venom. Dorsal/ventral — Dorsal refers to the top or back, while ventral refers to the bottom or belly.
The belly also has black flecks along it. This snake has a blunt head, a tiny mouth, and small eyes. Anteriorly the dorsal scales are usually in 17 rows (other eastern subspecies have 15 rows). [4] A mature prairie ringneck grows to about 25–36 cm (9.8–14.2 in) in total length (including tail), record 42 cm (16 + 1 ⁄ 2 in). [5]
The black mamba (Dendroaspis polylepis) is a large and highly venomous snake species native to much of Sub-Saharan Africa. It is the second longest venomous snake species in the world and is the fastest moving land snake, capable of moving at 4.32 to 5.4 metres per second (16–20 km/h, 10–12 mph).