Journal of Chemical Ecology

, Volume 21, Issue 12, pp 1907-1920

First online:

Behavioral correlates for minor volatile compounds from stink bugs (Heteroptera: Pentatomidae)

  • J. R. AldrichAffiliated withInsect Chemical Ecology Laboratory, USDA-ARS, Bldg 007 Agricultural Research Center-West
  • , M. C. RosiAffiliated withAgricultural Entomology Institute, Perugia University Borgo XX Giugno
  • , F. BinAffiliated withAgricultural Entomology Institute, Perugia University Borgo XX Giugno

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Many terrestrial Heteroptera have small, but functional, dorsal abdominal glands as adults. The chemistry, and associated intra- and inter-specific behavior, for dorsal abdominal gland secretions from 10 species representing four genera of Pentatomidae was investigated. Eighteen volatile compounds were identified in species-specific blends from the dorsal abdominal gland secretions ofEuschistus, Acrosternum, andEurydema adults, including aliphatic, aromatic, and terpenoid constituents. Evidence from bioassays is presented that parasitic Tachinidae (Diptera) and Scelionidae (Hymenoptera) use these secretions as kairomones. A field experiment was performed to test the hypothesis that minor volatiles increase the specificity of the main pheromone component from NearcticEuschistus species, methyl (2E,4Z)-decadienoate. However, significantly fewer individuals ofE. tristigmus were captured in traps baited with the complete blend for this species than in traps baited with methyl (2E,4Z)-decadienoate alone. Thus, at the concentrations tested, these kinds of dorsal abdominal gland secretions may be epideictic, promoting spacing in the natural habitat.

Key Words

Parasitoid Scelionidae Tachinidae Nezara Euschistus Eurydema Acrosternum Trissolcus pheromone kairomone