International Science Community Association International Research Journal of Biological Sciences 2278-3202 7 8 2018 08 10 Dynamic of green stink bug Bathycoelia thalassina Herr (1844) (Hemiptera: Pentatomidae) population in six main cocoa growing regions in Côte d’Ivoire 1 6 EN N’GUESSAN François Kouamé 1 National Centre of Research and Agronomy (CNRA), Laboratory of Entomology, 01 BP 808 Divo 01, Côte d’Ivoire N’Dri KOUAME Norbert 2 National Centre of Research and Agronomy (CNRA), Laboratory of Entomology, 01 BP 808 Divo 01, Côte d’Ivoire TANO Christian KévinDjè 3 UniversityJean Lorougnon Guédé of Daloa, UFR Agroforestery, Côte d’Ivoire N’GUESSAN Pierre Walet 4 National Centre of Research and Agronomy (CNRA), Laboratory of Entomology, 01 BP 808 Divo 01, Côte d’Ivoire N’GUESSAN Hauverset Assiénin 5 National Centre of Research and Agronomy (CNRA), Laboratory of Entomology, 01 BP 808 Divo 01, Côte d’Ivoire TANO Yao 6 Uni. Félix Houphouët Boigny of Cocody, UFR Biosciences, Laboratory of Zoology and Animal Biology, 22 BP 582 Abidjan 22, Côte d’Ivoire > Research Paper 2018 3 31 2018 08 10 Ivory Coast cocoa farming is threatened by the high parasite pressure due to the attacks of many insects including the green stink bug Bathycoeli athalassina considered minor. Losses due to bedbugs are estimated at 60% of the production during periods of strong outbreaks in certain regions. Variations in B. thalassina populations were assessed by sampling twice a month using the sheeting technique in six cocoa producing areas. This technique consisted of spreading tarpaulins over 24 feet of cocoa trees found in an area infested with B. thalassina. Spotted and stained cocoa trees are treated in high doses with an insecticide registered on the cocoa tree (Callifan Super 40 EC). The number of B. thalassina killed was counted on tarpaulins 5hours after treatment. The B. thalassina pullulation curves revealed two periods of strong outbreaks in the six production regions. The first period extends from June to November with a population peak ranging from 9,19 ± 2,00 to 14,56 ± 2,67 and the second from December to May with a population peak of 5,26 ± 1,99 and 9,80 ± 2,98. The B. thalassina outbreak starts during the rainy periods and gradually stops with the dry periods. These results will make it possible to make recommendations as to the periods favorable to phytosanitary interventions against this pest. Copyright@ International Science Community Association