Negritude's founding is well documented to 1935, but sources describe its major publications and influence continuing through the 1940s and beyond without converging on a year the movement itself can be said to have closed. Later Francophone African and Caribbean writers, including some of Negritude's own students, criticized and moved past its premises gradually rather than at one identifiable moment, and Negritude's own founders remained active figures, Senghor as Senegal's president until 1980, long after any such close would fall.
What would resolve this A literary-historical study tracing when Negritude stopped functioning as an active school, as distinct from when individual critiques of it (such as the Antillanite and Creolite movements' break with Senghor's essentialism) were first published, would let this be dated the way the Boom's 1971 Padilla-affair close is dated.
OpenLiterary historyNegritude (Wikipedia)