Abstract
The green lacewing, Chrysopa oculata Say, was significantly attracted to sticky cards baited with undiluted methyl salicylate (MeSA) in an unsprayed vineyard in Washington State. During the first three weeks of the five week experiment 5–8 times as many C. oculata were trapped on MeSA-baited as on unbaited or hexane-baited cards. Diluted (10%, 1%) MeSA-baited cards did not attract C. oculata. These results are discussed with respect to a hypothesis that only lacewings with carnivorous adults are attracted to MeSA.
Acknowledgments
I thank Dr James Johnson of the University of Idaho for his valuable insights in identifying lacewings. I also thank the Washington Hop Commission and Wine Advisory Board for providing partial funding for this research.