Cross-attraction between two species of Matsucoccus : Extraction, bioassay, and isolation of the sex pheromone.

In laboratory bioassays, males of Matsucoccus resinosae from Pinus resinosa in New York and Matsucoccus n. sp. from Pinus thunbergiana in Korea were strongly attracted to crude hexane extracts of M. resinosae females, and M. resinosae males responded strongly to extracts of Matsucoccus n. sp. females. Males of the two species responded similarly to gas chromatographic fractions and subfractions of a pentane extract of M. resinosae females. Sex pheromones of these two species appear to be the same or very similar.