Neotherina xanthosa is a species of moth of the family Geometridae. It is known from above 2,400 meters in the Talamanca and the Central Volcanic ranges in Costa Rica, but its range probably extends into the other mountain ranges in Costa Rica and northern Panama. The species is similar only to Neotherina callas, which it can be distinguishedfrom by its yellowish-brown colour and larger size. Adults are on wing year round.