Field surveys were carried to determine the seasonal occurrence of aphids and their natural enemies on durum wheat in Biskra (southeastern of Algeria), between december and june 2015. The sample was composed of 18 aphid species and 28 of their natural enemies. The species Rhopalosiphum maidis, captured is the most abundant species. The ladybug Coccinella septempunctata L., is the most abundant auxiliary. Predators from the following families were determined: Coccinellidae (Coleoptera), Chrysopidae (Neuroptera), Syrphidae. Braconidae (Hymenoptera). Aphid numbers fluctuated from early janury to the beginning of june and were highest from late febrery to early april. This richness of natural enemies of aphids negated the need for pesticides application. Therefore, conservation of natural enemies to fight against pests of agronomic interest such as aphids is a way of promoting biological control in the cereal agro-ecosystem in Biskra region.

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