author(s)
Sabrine Attia, Sirine Khouja, Imen Belaam Kort, Essia Limam, Mohammed Ammar and Kaouthar Grissa Lebdi

abstract
Thrips are important pests that can cause significant yield losses in many agricultural crops, including citrus, vine, vegetables, and fruits. In this paper, populations of thrips were monitoring during 2012 and 2013 in a citrus orchards in the region of Takelsa using blue sticky traps and Wikly weeds and flower samples. Samplings from citrus in Takelsa revealed 6 thrips species. The most frequently captured species were Thrips major, Frankliniella occidentalis T. tabaci, Leptothrips sp, Karnyothrips sp, and Haplothrips sp. The most abundant species were T. major Uzel with 69.66% and F. occidentalis Pergande with 22.47%. Dynamic populations of T. major species was also studied showing that they started to appear with low number in spring when flowering began, whereas the largest catches were registered during the summer months at favorable climatic conditions period of falling petals and fruit formation.