Abstract: Moths were researched in the Lower Subansiri district of Arunachal Pradesh, India. A preliminary field opportunistic survey will be conducted in Old Ziro, Lower Subansiri district, Arunachal Pradesh, during September-October 2020 to document the common moth, in total 38 moth species were observed foraging in day-night. With the help of photo documentation listed with taxa and photographs. After the present study, the moth fauna of Ziro comprises a total of 40 species belonging to 12 families. Of these, species richness of family Geometridae was found to be, Noctuidae, Erebidae, Crambidae, Sphingidae, Arctiidae, Uraniidae, Drepanidae, Saturniidae, Bombycidae, Lasiocampidae, Cossidae.