| sex pheromone component ratios and mating isolation among three lygus plant bug species of north america. | the plant bugs lygus hesperus, lygus lineolaris, and lygus elisus (hemiptera: miridae) are major pests of many agricultural crops in north america. previous studies suggested that females release a sex pheromone attractive to males. other studies showed that males and females contain microgram amounts of (e)-4-oxo-2-hexenal, hexyl butyrate, and (e)-2-hexenyl butyrate that are emitted as a defense against predators. using gas chromatography-mass spectrometry, we found that female l. lineolaris an ... | 2013 | 24233237 |