From 2002 to 2012, the authors collected 12 specimens of un-identified rodent taxon in Phu Yen district, Son La province. Heabody 223-230mm, tail 250-290mm, hindfoot 42-45mm, ear 27-28mm
breast 2-2 = 8, weight 300-350g. Regarding its appearance, this taxon looks like Leopoldamy group, but it has different characteristics that other species do not have such as 1 band of naked skin in a structure of external gland in a belly. The authors would like to publish the information of this taxon to call for the collaboration in collecting data, specimens to clarify the location and classification of this unidentified taxon.