The role of tsetse flies in the transmission of trypanosomes has for long overshadowed that of mechanical vectors. Tabanids and stomoxyines have direct effects (cutaneous lesions, blood loss, disturbance, etc.) and indirect effects (transmission of pathogenic agents) on livestock which can have significant veterinary and economic impact. In West Africa, trapping of mechanical vectors has usually been carried out using tsetse fly traps. Only the Nzi trap, developed in Kenya by Mihok, is considered more effective in trapping tabanid. For stomoxyines the Vavoua trap (monoconic) is considered most effective. The authors compared trapping performances of a new trap (the Tetra), conceived and developed by Desquesnes at CIRDES, with the Nzi trap. During one year, both traps were deployed every two days and regularly rotated to collect insects in Lahirasso, Burkina Faso. Out of 17,991 tabanids trapped, 62.7% were caught by the Tetra trap and 37.3% by the Nzi trap, and out of 2,149 stomoxyines trapped, 53.9% were caught by the Tetra trap and 46.1% by the Nzi trap, Results showed that the Tetra trap is an effective tool to be recommended for the capture of mechanical vectors especially tabanids. A collection of tabanids caught on this occasion is available at CIRDES, as well as a booklet of information and identification of the most common West African Tabanids.