What is "negro bug"

Negro \Ne"gro\, a. Of or pertaining to negroes; black.

Negro bug (Zo["o]l.), a minute black bug common on the raspberry and blackberry. It produces a very disagreeable flavor.

negro corn, the Indian millet or durra; -- so called in the West Indies. See Durra.
--McElrath.

Negro fly (Zo["o]l.), a black dipterous fly ( Psila ros[ae]) which, in the larval state, is injurious to carrots; -- called also carrot fly.

Negro head (Com.), Cavendish tobacco. [Cant]
--McElrath.

Negro monkey (Zo["o]l.), the moor monkey.

n. Any of the (taxlink Thyreocorinae subfamily noshow=1), a subfamily of shield bugs.