Wingspan of 12-14 mm. Forewings grey-brown with yellow markings and small black spots. Hindwings pale grey with a fringe of long cilia.
Larvae
Final instars reach 10-12 mm in length. Body is greygreen with brown pinacula. Five interrupted pinkish stripes are present.
Eggs
Oval, white and 0.5 mm in length. Laid on both sides of leaves and petioles.
Distribution
Europe, North Africa, the Middle East and Asia
Economic Host(s)
Sugar beet and beet
Symptons/Signs
Larvae feed within mines on leaves and stems. Later instars also spin leaves together to provide a feeding shelter. Distortions in the growing shoots is a sign of infestation.
Generations
2-3 (climate dependent)
Monitoring
Adults Present
April to October (climate dependent)
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. Replace the pheromone dispensers every 4 weeks to achieve optimum results.
Replace sticky inserts once they become saturated 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
