The epithet, guentheri, honors Albert Günther (1830–1914), German-born zoologist at the British Museum (Natural History).

[3] T. guentheri is found in India (Sikkim, West Bengal), Bangladesh, Nepal, and Bhutan.

[2] The preferred natural habitat of T. guentheri is forest with rocky slopes, at altitudes of about 1,800 m (5,900 ft).

[1] The rosebelly worm-eating snake does have a rose-colored belly when alive.

However, specimens preserved in alcohol are dark brown dorsally, with indistinct lighter and darker longitudinal streaks; and are yellowish ventrally, either uniform or scantily mottled with brown.