Larch Case Bearer – Coleophora laricella

Available Products
1 mg Standard Lure
Dispenser Details
Natural Rubber Septum
Active Life
4-6 weeks (temperature dependent)
Pest Details
Adult
9-11 mm wingspan. Forewings shiny grey & hind wings also shiny grey. Head grey with pale grey antennae
Larvae
Up to 4.5 mm long with 16 legs. Dark brown with black head & prothoracic plate. Pair of small black plates present on second thoracic segment.
Eggs
Bright yellow turning to dark red, deposited singly on young needles.
Distribution
Central and Northern Europe. Recently introduced to North America
Economic Host(s)
Larch (Larix) species.
Symptons/Signs
Larvae feed on young needles giving tips whitish colour under a lens. Rounded entry hole may also be visible.
Generations
1
Monitoring
Adults Present
June to August (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, if used, 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 18 months or a freezer for an extended life of 24 months. Always store sealed in original packaging.
Recommended Trap

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