Deuterocopus atrapex is a moth of the family Pterophoridae described by Thomas Bainbrigge Fletcher in 1909. It has been recorded from Sri Lanka, Assam, Selangor, the Tenasserim Hills, south-eastern Borneo, Ternate, Ambon Island, Batian, southern Sulawesi, the Sangihe Islands, Halmahera, Neu Pommern, northern New Guinea, the Kei Islands, the D'Entrecasteaux Islands and Queensland.