Which indicators and control timing are associated with European pine shoot moth?

• A. Piles of pitch at buds; spray or prune before adult emergence in May.
• B. White cottony tufts on bark; spray in late winter.
• C. Defoliation of entire branches; apply Bt in early spring.
• D. Growth abnormalities with deformed needles; prune during summer.

Answer: (A)

The main idea here is recognizing the signs and timing that show European pine shoot moth is attacking pine shoots. A hallmark symptom is piles of pitch at the buds where the larvae have bored into the new growth. That resin exudation indicates active shoot feeding, and it points to a shoot moth problem rather than other pests or diseases. Because the moth’s larvae are small and vulnerable early, the most effective control is done before the adults emerge in spring, around May, either by pruning out the infested shoots or by applying a spray at that window to kill the larvae before they cause more damage. The other descriptions don’t fit this pest: white cottony tufts on bark are typical of woolly aphids or bark scales, not pine shoot moth; defoliation of entire branches suggests a different defoliator and timing with Bt may not target this moth; growth abnormalities with deformed needles and summer pruning don’t align with the life cycle or the typical management window for shoot moths.