Wingspan of 19-27 mm. Forewings yellow to brownishgrey with characteristic pale stripe along fore edge and an orange spot in the basal third of the wing. Hindwings
pale grey with dark venation and a dark double line in front of the fringe. Fringe is long and pale.
Larvae
Length of 15-22 mm. Body colour varies from dirty greenish-grey to reddish.
Eggs
Yellowish and shiny. Laid on all parts of the host plant.
Distribution
Cosmopolitan
Economic Host(s)
Legumes including soybean, lima bean, pea, lentil and alfalfa.
Symptons/Signs
Larvae bore into pods to feed leaving a brown entry spot. As the larvae feeds within the pod accumulation of frass in the pod results in the formation of rotten patches. A further large hole is produced when the larva exits to pupate in the ground.
Generations
2-4 (climate dependent)
Monitoring
Adults Present
April to December (climate dependant). May enter diapause in wet or cold periods.
Recommended Trap Density
2 traps per hectare in large uniform crops and 3-4 traps per hectare in mixed crop stands.
Trap Maintenance
Check traps on a regular basis; at least twice a week. It is recommended to replace the pheromone dispensers every 4 weeks to achieve optimum results. Replace sticky inserts, if used, when they become filled with dust or insects.
Storage
Keep product away from heat and direct sunlight. Store in a refrigerator for a shelf life of 18 months or a freezer for an extended life of 24 months. Always store sealed in
original packaging.
