Orthriophis taeniurus ridleyi.
Also known as Ridley's Beauty Snake or Cave Racer.
The Cave-Dwelling Beauty Snake is, in fact, a subspecies of the famous Beauty Rat Snake (O. taeniurus) and probably best known for being found in caves (as its name implies) where it lives in almost complete darkness. These snakes are feeding mainly on bats, being able to catch them in flight; they're medium sized, non-venomous snakes and can be found in the Southern parts of Thailand.
The Cave Racer is my absolute favourite of all of the O. taeniurus-subspecies. Actually makes me kinda sad that i couldn't colour it full-size (due to the art's theme and style), because it has such a stunning blending of colours throughout the body.