Yunnan Field Mouse

The Yunnan field mouse, Apodemus ilex, was described by Oldfield Thomas in 1922 from the Salween-Mekong divide in Yunnan. The Mammal Diversity Database lists it from China, India, Myanmar and Vietnam. A 2026 study reported it from Vietnam for the first time, in Son La Province, the southernmost locality for the species and the genus (Mammal Diversity Database; Biodiversity Data Journal 2026, open access).

The Vietnamese animals belong to the eastern branch of the species, which also lives on the southern Yunnan-Guizhou Plateau and the upper Mekong, Red and Black river basins. No source opened describes the Indian part of its range or gives size or habitat detail.