Abstract: The present disclosure provides a ladybug attractant, the ladybug being a natural enemy of an aphid, the ladybug attractant including a ladybug sex pheromone, a synomone and a kairomone; wherein the synomone is an aphid-induced plant volatile; the kairomone is composed of an aphid alarm pheromone, an aphid body surface extract and an aphid honeydew volatile. The ladybug attractant shows good attracting effect, good repeatability, high stability, and a broad spectrum of beneficial ladybugs such as Coccinella septempunctata, Harmonia axyridis, and Propylaea japonica in laboratory and field experiments.

Abstract: The present disclosure provides a ladybug attractant, the ladybug being a natural enemy of an aphid, the ladybug attractant including a ladybug sex pheromone, a synomone and a kairomone; wherein the synomone is an aphid-induced plant volatile; the kairomone is composed of an aphid alarm pheromone, an aphid body surface extract and an aphid honeydew volatile. The ladybug attractant shows good attracting effect, good repeatability, high stability, and a broad spectrum of beneficial ladybugs such as Coccinella septempunctata, Harmonia axyridis, and Propylaea japonica in laboratory and field experiments.