Two Structural Analogs of Kairomones are Detected by an Odorant Receptor HvarOR28 in the Coccinellid Hippodamia variegata

In natural environments, general plant volatiles and herbivore-induced plant volatiles (HIPVs) serve as critical clues for predatory natural enemies in the search for prey. The insect olfactory system plays a vital role in perceiving plant volatiles including HIPVs. In this study, we found that HIPV (