Aphids and their natural enemies are differently affected by habitat features at local and landscape scales

► Landscape simplification benefits predatory carabids and coccinellids. ► Margin distance affect aphid, parasitoid and coccinellid populations. ► The generalist predators' effect on aphids is comparable to the specialist one. ► Different predator guilds has non-additive effect in suppressing cereal aphids. ► Landscape and local features modulates biocontrol by acting differentially on the diverse predator guilds.