Hessian fly
Concise Oxford English Dictionary © 2008 Oxford University Press:
Hessian fly
▶noun a gall midge whose larvae are a pest of cereal crops. [Mayetiola destructor.]
– origin C18: so named because it was supposed (erroneously) to have been carried to America by troops from Hesse in Germany during the War of Independence.
'Hessian fly' also found in these Oxford entries:
