When trapping for more than one species of moth, separate traps for different moth species by at least 20 meters (65 feet).
The Plastic Bucket Trap is also known as the unitrap. The trap has a green canopy, yellow funnel, and white bucket and is used with a dry kill strip. See Brambila et al. (2010) for for instructions on using the plastic bucket trap.
The Texas (Hartstack) trap is not available commercially. See Hartstack et al. (1979) or Johnson and McNeil (no date) for images and trap design.
Placing lures for two or more target species in a trap should never be done unless otherwise noted here.
May 24, 2012: The length of effectiveness of this lure may be reduced in hot and dry climates. In these environments, lures may need to be changed every two weeks instead of every four weeks.
Morphological: Helicoverpa armigera can be visually screened to some degree, but definitive identification requires dissection. Helicoverpa armigera and the native, abundant species, Helicoverpa zea are very similar looking. Helicoverpa zea are attracted to the H. armigera lure and are commonly found in H. armigera traps.
Final identification is by dissection of (adult) male genitalic structures.
Present in U.S.: Helicoverpa zea and Heliothis virescens.
Not present in U.S.: Helicoverpa punctigera and Helicoverpa assulta.