Non-crop vegetation associated with chili pepper agroecosystems promote the abundance and survival of aphid predators

► We assessed the role of non-crop weeds for maintaining aphidophagous predators in tropical agroecosystems. ► We quantified the survival of two coccinellids feeding on weed floral resources. ► The interactions between non-crop weeds and natural enemies varied according to plant species and predators group. ► Native and exotic coccinellids survived differently according to flower resource. ► Non-crop weeds can affect aphid natural enemy abundance and survival.