The insect Lixus pulverulentus is known to attack faba bean and to induce many damages on plants. The bioecology studies of L. pulverulentus was conducted at Béja (North-West of Tunisia) and Kairouan (Center of Tunisia). We report here the first identification of a natural enemies of L. pulverulentus (syn. L. algirus), a parasitoid wasp Pteromalus lixiand a predatory fly Zeuxia aberrans at both Béja and Kairouan. Parasitization incited by wasps was of about 0.8-2.6% and that displayed by larvae of flies was around 1.3-4.7%, respectively, which are considered low parasitism rates. Rearing attempts of thiswasp may be useful forbiological control of beetles based on indigenous natural enemies.