Requests to determine the cause of damage
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From: stephane
Assigned: M. Zúbrik
Country: Czechia
Question
white foam an trunk and branches. needles dry out fall.
Answer
Hello, thank you for your inquiry. It is an aphid – Pineus strobi, the pine bark adelgid.Most individuals overwinter on the bark, where in spring they begin to produce large quantities of cotton-like masses. These cover and protect the larvae from external influences. Eggs are also laid under the cotton, from which individuals hatch and move to young shoots, with some remaining on the trunk. During its occurrence, the pines appear as if they are dusted with lime. In some areas, it is abundant, and its feeding can significantly weaken the trees. Best regards, M. Zúbrik
Number of votes for this answer: 0
Pest
Pine bark adelgid
Pineus strobi
