Illinoia (Syn = Macrosiphum) liriodendri
Pest description and damage Tuliptree aphids are small, green to pinkish elongate soft-bodied insects with long legs. They form clusters of aphids of various sizes on the undersides of the leaves, especially at the tips of branches. The terminal shoots become dull as nitrogen is removed by these sucking pests. They are also noted for producing copious amounts of honeydew that coats underlying vegetation.
Biology and life history In the fall, adult aphids lay eggs tucked in crevices formed by buds and branches where they will spend the winter. At this time adult aphids disappear. Eggs hatch at bud break and begin to feed and mature. At maturity, the parthenogenetic, unmated females give birth to live nymphs. These develop and give birth to more aphids. Winged adults that can migrate to new hosts develop in fall.
Pest monitoring Begin monitoring for aphids and biological controls in spring at budbreak.
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