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Corn Ear Worm Moth – Helicoverpa zea

Available Products
1 mg Standard Lure
Dispenser Details
Natural Rubber Septum
Active Life
4-6 weeks (temperature dependent)
Pest Details
Adult
Wingspan of 32-45 mm. Forewings variable but often yellowish-brown in colour with a central dark spot – often more distinct when viewed from below. Forewing may also have a broad dark medial band but margin of wing not darkened. Hindwings are creamy white basally and dark distally, often with a small dark spot centrally.
Larvae
Early instars are grey with a black head. Final instars reach 40 mm in length. Two colour phases exist – a brown or green phase. Longitudinal lines of white, cream or yellow are present with the spiracular band being the most distinct. Final instars may become brighter in colour with pink and extra striations.
Eggs
Semi-spherical and ribbed, 0.59 mm in diameter. Initially green in colour and turning red then grey with age. 1-3 eggs typically laid on silk of maize or fruiting structures of plant
Distribution
The Americas and China
Economic Host(s)
Polyphagous but prefers maize, sorghum, tomato and pepper.
Symptons/Signs
On hatching larvae move to young vegetative parts such as blossoms and buds or outer leaves of plant (or silks in maize) to feed. Later larvae may bore into fruits, pods and cobs to feed.
Generations
Up to 11
Monitoring
Adults Present
September – May (All year round in warmer states)
Recommended Trap Density
2 traps per hectare in large uniform areas of crops and 3- 5 traps per hectare in less dense or 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.
Storage
Keep product away from heat and direct sunlight. Store in a refrigerator for a shelf life of 12 months or a freezer for an extended life of 24 months. Always store sealed in original packaging.
Recommended Trap
View Trap

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