Aphids trapGreat Smoky Mountains National ParkTrap for aphids; some mounted on poles, others suspended by ropes.Balsam Woolly Aphid Study, IV-Z-Pests-16785, Miscellaneous - Pests
Aphid trapsGreat Smoky Mountains National ParkFraser fir infested with Balsam Woolly aphids. The dying branches turn reddish color hence the name red top."",Red Top" Balsam woolly aphid study", IV-Z-Pests-16788, Miscellaneous - Pests
Aphid trapsGreat Smoky Mountains National ParkTraps suspended from trees. Wire screen coated with a sticky substance used to collect air borne eggs and mobile nymphs. The insect was introduced from Europe in the early 1900's.Balsam Woolly Aphid Study, IV-Z-Pests-16786, Miscellaneous - Pests