Diversity of Coleoptera on Cucumber in the Tonkpi Region of Man, Côte d’Ivoire

Abstract

Six coleopteran species were collected on cucumber from the Tonkpi Region of Man, Cote d’Ivoire Aulacophora foveicollis, Alticini sp, Paranapiacaba tricincta and Acalymma vittatum observed damaging the plants by making holes on the leaves and flowers. Maximum damage occurred during the dry season (34.66%) and the damage intensity was moderate (12%). In contrast, least damage was during the rainy season (24%) and the damage intensity was lower (6.6%). Predator species recorded were Coccinella septempunctata and Harmonia dimidiata and these were more abundant during the rainy season. Shannon’s index ranged from 2.94 to 3.15 during the dry and rainy seasons, respectively. The occurrence frequencies during the dry and rainy season were varied from 62 to 99% and were classified as constant species.