Pantherophis obsoletus, also known commonly as the western rat snake, black rat snake, pilot black snake, or simply black snake, [4] is a nonvenomous species of snake in the family Colubridae. The species is native to central North America. There are no subspecies that are recognized as being valid. [5]

2024年4月25日 · The western rat snake is a colubrid native to central North America. It is also known by the names pilot black snake, black rat snake, or simply black snake. The snake is active during the day. It has one of the largest ranges among all the common rat snakes.

The Western rat snake (Pantherophis obsoletus) is a non-venomous species of Colubridae found in central North America. Along with other snakes of the eastern United States, like the Eastern indigo snake or the Eastern racer, it is called 'black snake'.

The western ratsnake, a glossy black snake, is one of Missouri’s largest and most familiar snakes. Its size and dark color make it seem imposing, but it is as harmless to humans as it is bad news for rodents.

2024年5月27日 · Western rat snakes are one of the longest snakes in North America; the longest one on record measured 111 inches. They are long, slender, non-venomous constrictors that are terrific climbers. These snakes are members of the Colubridae family and are …

The Western rat snake (Pantherophis obsoletus) is a non-venomous species of Colubridae found in central North America. Along with other snakes of the eastern United States, like the Eastern indigo snake or the Eastern racer, it is called 'black snake'.

Pantherophis obsoletus – also known as the western rat snake, black rat snake, pilot black snake, or simply black snake – is a nonvenomous species of Colubridae found in central North America.

West­ern rat snakes have weakly keeled scales that are oth­er­wise smooth, sim­i­lar to east­ern rat snakes (Pan­therophis al­leghanien­sis). West­ern rat snakes pos­sess slen­der bod­ies and adults have a snout-vent length (SVL) be­tween 96 cm and 154 cm.

Mostly black, often with specks of cream or pink between scales. Labial scales, chin, and neck cream. Belly with irregular checkerboard of black and white. Juveniles gray with dark blotches and a black bar that runs through eye to jawline. Species: P. obsoletus (Western Ratsnake) and P. oboletus-spiloides (Western / Gray Ratsnake hybrids)

The Western Ratsnake can be distinguished from the North American Racer, the other common "black snake" found in Arkansas, by the presence of a ridge (called a ⚠ keel) on each body scale. The Western Ratsnake also has a larger head and therefore a more distinct neck than the North American Racer.