Major component in male sex pheromone of cereal pestEurygaster integriceps puton (Heteroptera: Scutelleridae) identified as a homosesquiterpenoid.

A homosesquiterpenoid, (4Z,4'E)-4-(1',5'-dimethyl-4'-heptenylidene)-1-methylcyclohexene, has been identified as a major component of the scent emitted by calling males ofEurygaster integriceps. Minor components of the scent included vanillin. TheE. integriceps male homosesquiterpenoid is an addition to the list of sesquiterpenoids identified as components of male attractant sex pheromones in pentatomoid Heteroptera.