[3] It is endemic to north-eastern Thailand and known from the Kalasin, Roi Et, and Ubon Ratchathani Provinces.

[1][4] The specific name jarujini honours Jarujin Nabhitabhata from the National Science Museum of Thailand.

[2] The tadpole has a striking colouration: the body is yellowish grey with gold lateral stripe, and the tail is light yellow in its anterior part and bright red further back, with the whole tail covered with irregular black spots.

The largest specimen (Gosner stage 38) measured 19 mm (0.75 in) in body length.

[4] Zhangixalus jarujini occurs in a variety of habitats within dipterocarp and hilly evergreen forests at elevations of 230–500 m (750–1,640 ft) above sea level.