Woolly apple aphids attack the young stems, roots and fruit of apple trees in spring. They surround themselves with a mass of long cottony-white wax strands. Their feeding produces galls on stems and roots, which can provide a reservoir of aphids that continue to infest the aerial parts of the tree.
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Archives New Zealand - Te Rua Mahara o te Kāwanatanga
Reference:
AANR 6329 54 DA23,148
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