It is endemic to Vietnam and possibly nearby parts of Laos.

[1] Scientists observed this frog in karst forest.

People have seen this frog between 1000 and 1200 meters above sea level.

There is a green mark in the shape of the letter Y on the back.

[2] Scientists named this frog for Doctor Truong Quang Nguyen, a scientist from the Vietnam Academy of Science and Technology's Institute of Ecology and Biological Resources who has contributed to the study of amphibians in this part of southeast Asia.