Pepper is amongst the most consumed vegetable fruits in Cameroon. Its production remains seasonal. In order to increase plant yield. A study was lunched between March 2020 and December 2021 with the aim of contributing to the knowledge of insect fauna infesting pepper fruits and suggest biological control methods using parasitoids. A weekly inventory was made. Fruits stung by insects were collected and taken to the laboratory. Apest that emerged was conserved in alcohol at 70oCand was exposed to parasitoids used here as biological control agents. 7 species were identified as pests associated to 7 species of parasitoids. Ceratitis capitata, Silbacapsicarum and Tutaabsolutales were the most abundant. These pests led to important losses in plant yield by 33 %, 27 % and 40 % respectively. four functional groups were identified which included: stinging/sucking, parasitoids, phyllophages and licking/sucking. Amongst parasitoids, 4 species were more aggressive towards insect pests. This was the case of Diachasmimorphatryoni whose parasitoidismerate was 21.27%, Diachasmimorphalongicaudata 15.78%, Fopiusarisanus19.43%and Tetrastichusgiffardianus17.77%. Parasitoids led to a global improvement on plant yield of 14.48 % and thus, play an important role in the biological control of pests on pepper.
