[The trapping of tsetse flies (Diptera: Glossinidae). Improvement of a model: the Vavoua trap].

The control of tsetse flies with traps needs a decrease of their cost/efficiency. In the forest belt of Côte d'Ivoire, the research on Glossina palpalis palpalis behaviour allows to propose a new model of trap, the "Vavoua" trap, issued from the biconical and the pyramidal traps, with a similar efficiency but a twice lower cost (1139 F CFA without manpower, i.e. 3.55 US $, respectively 6.68 and 6.98 US $ for the biconical and the pyramidal). This trap has an upper cone (polyamide mosquito net) overcoming three screens (length 45 cm), sewed at 120 degrees, composed of a blue external part (cotton/polyester) and a black internal part (polyamide) with a blue/black ratio equal to 2. Its low cost and the possibility for the farmer to soak themselves the trap with insecticide allow to consider its use for large-scale control of tsetse flies in the forest zones by rural communities.