Elaphe obsoleta lindheimeri

Taxobox
name = Texas Rat Snake

---

regnum = Animalia
phylum = Chordata
classis = Reptilia
ordo = Squamata
familia = Colubridae
genus = "Elaphe"
species = "E. obsoleta"
subspecies = "E. o. lindheimeri"
binomial = "Elaphe obsoleta lindheimeri"
binomial_authority = Say, 1823
synonyms = "Elaphe obsoleta lindheimerii"
Baird & Girard, 1853
"Scotophis Lindheimerii"
Baird & Girard, 1853

The Texas Rat Snake ("Elaphe obsoleta lindheimeri") is a species of rat snake, a non-venomous colubrid found in the United States, primarily within the state of Texas, but its range also extends into Louisiana, Arkansas and Oklahoma. It intergrades with other subspecies of "Elaphe obsoleta", so exact range boundaries are impossible to distinguish. The epithet "lindheimeri" is to honor the German-American naturalist Ferdinand Jacob Lindheimer, who collected the first specimen in New Braunfels, Texas.

Description

The Texas Rat Snake is a fairly large snake, capable of attaining lengths past six feet. They vary greatly in color and patterning throughout their range, but they are typically yellow or tan in color, with brown to olive green irregular blotching from head to tail. Specimens from the southern area of their range tend to have more yellow on them, while those from the northern range tend to be darker. One way to distinguish them from other rat snakes is they are the only ones with a solid grey head. Some specimens also have red or orange speckling. Their belly is typically a solid gray or white in color. There are several naturally occurring color variations, including albinos, high orange or hypomelanistic, and a few specimens which display leucisism which have become regularly captive bred and are popular in the pet trade.

Behavior

The Texas Rat Snake has a voracious appetite, consuming large amounts of rodents and birds, and sometimes lizards and frogs which they subdue with constriction. They are generalists, found in a wide range of habitats from swamps, to forests to grasslands, even in urban areas. They are agile climbers, able to reach bird nests with relative ease. They are often found around farmland, and will sometimes consume fledgeling chickens and eggs, which leads them to be erroneously called the chicken snake. They are known for their attitude, and will typically bite if handled, though their bite is harmless.

Taxonomy

Many sources continue to refer to the Texas Rat Snake by its scientific name, "Elaphe obsoleta lindheimeri", though all North American rat snake species were suggested for reclassification to the genus "Pantherophis". A further revision of "Pantherophis obsoletus" has recommended the elimination of the various subspecies entirely, considering them all to be merely locality variations.

Gallery

References

*EMBL species|genus=Elaphe|species=obsoleta
* [http://www.zo.utexas.edu/research/txherps/snakes/elaphe.obsoleta.html Herps of Texas: "Elaphe obsoleta"]