[Contact between Glossina palpalis palpalis (Rob.-Desv., 1830) and G. palpalis gambiensis Vanderplank, 1949 (Diptera) in the Bouaké area (Ivory Coast)].

The boundary between the distributions of the tsetse sub-species G. palpalis palpalis and G. p. gambiensis lies 60 km north of Bouaké, Ivory Coast. At this place, there is a very narrow hybridization belt. 10 males were caught and compared with hybrids of laboratory origin. The possibility of a postcopulatory sub-specific barrier is discussed.