Olfactory and visual cues in host-finding in the Burnet moth, Zygaena trifolii

Zygaena trifolii (Esper) moths are strongly attracted to the flowers of Dipsacaceae, such as Knautia arvensis (L.) Coulter and other scabious-like flowers. This attraction is particularly obvious in habitats where other nectar sources are readily available. It may thus be assumed that during the life cycle of Burnet moths, scabious flowers offer resources that are of special significance. We report on the physiological significance of volatile compounds of K. arvensis flower-scents to Z. trifolii moths, as tested by their antennal response and their attractiveness in the field.