Aphis fabae Scopoli and Myzus persicae Sulzer (Hemiptera: Aphididae) are economically important pests of sugar beet. Natural enemies have potential for pest regulation. However their contribution to the control of the two sugar beet aphids is poorly understood. To elucidate the trophic relationships, we selected three aphid predators for molecular gut content analysis: two generalists Cantharis lateralis L. (Coleoptera: Cantha...