Largest Ips beetle, 5.5-8.2 mm in length. Entirely dark brown with an excavated cavity at rear or elytra. Lateral margins of cavity each with a row of 6 spines. Erect yellow hairs cover the perimeter of the body.
Larvae
Small white and legless with a brown head
Eggs
Not Available
Distribution
Europe and most parts of Asia
Economic Host(s)
Pine (Pinus), larix (Larix) and spruce (Picea)
Symptons/Signs
The first sign of infestation is fading in colour from green to yellow or reddish-brown and brown dust on the bark surface. The gallery pattern in the cambium of infested trees consists of a nuptial chamber and 2-5 longitudinal egg galleries, 15-100 cm long with a blue stain. Round exit holes ca. 4mm in diameter may also be seen.
Generations
Typically 2 but up to 5 in warmer climates
Monitoring
Adults Present
April-May and July-August
Recommended Trap Density
Traps spaced at 250m apart should be sufficient for monitoring purposes. Traps spaced 100m apart can help with population control.
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 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.
