Wing span of 15-16 mm. Forewings grey-brown with white triangle in middle of posterior edge. Hind wings are uniformly grey. 36-40 antennomeres.
Larvae
Up to 10 mm long. Cephalic capsule is brown and the body is yellowish-white.
Eggs
White and elliptical, laid singly on the surface of leaves.
Distribution
Europe, North America and northern parts of Asia.
Economic Host(s)
All members of the Allium family
Symptons/Signs
Young larvae feed within galleries in leaves, while later instars feed on the inner yellow leaves. Galleries and longitudinal grooves are signs of infestation in leek while windows in leaves are signs in onion.
Generations
2-8
Monitoring
Adults Present
April to October (climate dependant)
Recommended Trap Density
2-3 traps per hectare
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 the sticky inserts when they become filled with dust or
insects.
Storage
Keep product away from direct sunlight, heat, sparks and open flame. 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.
