nut weevil
/ˈnʌt ˌwiːv(ɪ)l/noun
Any of various weevils (beetles of the family Curculionidae), mainly of the genus Curculio, affecting nut-bearing trees or shrubs; especially a small yellow-scaled weevil, Curculio nucum, which deposits its eggs in green hazelnuts and filbert nuts.
Origin
Early 19th century; earliest use found in William Bingley (1774–1823), naturalist and Church of England clergyman. From nut + weevil.