Chestnut Leaf Roller – Pammene fasciana

Available Products
1 mg Standard Lure
Dispenser Details
Natural Rubber Septum
Active Life
4-6 weeks (temperature dependent)
Pest Details
Adult
Wingspan of 13-17 mm. Forewings are white suffused with grey, brown and ochreous and marked with dark brown, blue-black or blackish markings. A large submarginal ocellus consisting of a metallic centre bar and 6-7 black dashes is present. Hindwings are greyishbrown.
Larvae
Up to 13 mm long when fully grown. Body creamy white with large brownish pinacula. Head is yellowish-brown and prothoracic plate is yellowish-brown with black markings. Anal plate is pale brown, speckled with black. An anal comb is present.
Eggs
Ca. 0.7 x 0.6 mm in size, creamy white, developing a purplish-red ring as the embryo develops. Laid singly or in small batches along the veins of leaves and hatch in ca. 10 days.
Distribution
Europe
Economic Host(s)
Primarily chestnut (Castanea), oak (Quercus) and beech (Fagus).
Symptons/Signs
After hatching larvae bore into developing nuts to feed inside. Frass is expelled from the entrance holes. Once nuts drop the larvae exit to pupate under bark or moss.
Generations
1
Monitoring
Adults Present
June to July (climate dependant)
Recommended Trap Density
In the tree canopy at a height of 2-4m. Ensure that the trap entrances remain unblocked by leaves or branches.
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.
Recommended Trap

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