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Texas rat snake
The Texas rat snake (''Elaphe obsoleta lindheimeri'') is a subspecies of rat snake, a nonvenomous colubrid found in the United States, primarily within the state of Texas, but its range extends into Louisiana, Arkansas and Oklahoma.〔"Hibbits, Troy, "(''Elaphe obsoleta lindheimeri (Texas Rat Snake) )," (Kingsnake.com ) (accessed May 7, 2010).〕 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.〔Ferdinand Jacob Lindheimer〕
== Description ==
The Texas rat snake is a fairly large snake, capable of attaining lengths past five 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, 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 have red or orange speckling. The belly is typically a solid gray or white in color. The several naturally occurring color variations include albinos, high orange or hypomelanistic, and a few specimens which display leucism which have become regularly captive-bred and are popular in the pet trade. The Texas Rat Snake becomes very black with white spots in some specimens caught in Sabine County, Texas which reflects the northern intergrade of the black rat snake.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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