[The determination of the geographical boundaries between two subspecies of tsetse flies in the Ivory Coast: Glossina palpalis (Robineau-Desvoidy, 1830) and G.p.gambiensis (Vanderplank, 1949)].

The biometric analysis of the male genitalia of Glossina palpalis palpalis and Glossina palpalis gambiensis about samples caught along four bits of road in Côte d'Ivoire permitted to determine the geographic limit between both subspecies. G. p. palpalis is everywhere in the Guinean area whereas G. p. gambiensis is found in the Sudanese one. In the wet savanna, both subspecies live together and mate to give out a reduced number of hybrids.