The specific name, theobaldi, is in honor of British herpetologist William Theobald.

[3] O. theobaldi is found in Bangladesh, India (Assam), Myanmar (formerly called Burma), and Thailand.

[4] The preferred natural habitat of O. theobaldi is forest, at altitudes of 220–680 m (720–2,230 ft).

[1] O. theobaldi may attain a snout-vent length (SVL) of 39 cm (15 in).

Its coloration resembles that of a garter snake.