Sycamore Lace Bug

What is sycamore lace bug?

Sycamore lace bug, Corythucha ciliata is an insect that feeds on the undersides of the leaves of sycamore trees, causing white stippling, chlorotic or bronzed leaves, and early leaf drop. In late summer when it is dry, infestations are more common and severe infestations can cause defoliation. Consecutive years of lace bug damage and other stress factors may lead to tree death.

Treatment Strategy

Lace bugs are a relatively easy pest to control.  Historically, foliar sprays with Up Star® Gold were used once activity was visible. However, with the advent of soil-applied systemic insecticides like Optrol™and Transtect, treatment has become even easier.

Purchase Sycamore Lace Bug Treatments Now!

Sycamore Lace Bug Treatment Option 1

Apply Xytect™ in late summer/early fall for control the following year.

Application Type – Soil drench

DIY Product/Equipment Needed:

Optrol™

• Soil Drench Kit

• Measuring or diameter tape

• Bucket or watering can

• Gloves

Sycamore Lace Bug Treatment Option 2

Apply Transtect™ in early spring for current season control.

Application Type – Soil drench

DIY Product/Equipment Needed:

• Transtect

• Soil Drench Kit

• Measuring or diameter tape

• Bucket or watering can

• Gloves

Sycamore Lace Bug Treatment Option 3

Foliar sprays of Up Star Gold® should only be used for immediate action against the insect.

Application Type – Foliar spray

DIY Product/Equipment Needed:

• Up-Star Gold

• Hand pump sprayer with wand

• Gloves

• Safety glasses

Sycamore Lace Bug DIY Kit

Option 1

Application Type – Soil drench

DIY Product/Equipment Needed:

Optrol™

• Soil Drench Kit

• Measuring or diameter tape

• Bucket or watering can

• Gloves

Option 2

Application Type – Soil drench

DIY Product/Equipment Needed:

• Transtect

• Soil Drench Kit

• Measuring or diameter tape

• Bucket or watering can

• Gloves

Option 3

Application Type – Foliar spray

DIY Product/Equipment Needed:

• Up-Star Gold

• Hand pump sprayer with wand

• Gloves

• Safety glasses

How Is It Spread?

Biology

In the spring, sycamore lace bug adults become active as leaves appear on the tree.  The female lays hundreds of eggs on the underside of leaf veins.  Eggs hatch in 14 days and the nymphs feed for a few weeks before turning into adults.  Adults overwinter under leaves, stones, and in bark crevices.  There may be as many as 5 generations of sycamore lace bug per year.

Susceptible Trees

Sycamore, ash, and hickory

Symptoms

  • Whitish speckling on the upper surface of leaves.
  • Chlorotic, bronzed leaves and early leaf drop.
  • Adults are yellowish-green to brown, flattened, and about 1/8 inch in length.
  • Adult wings are lace-like and white with a brown spot on the front of each edge.
  • Dark excrement may be found on the leaf surface along veins.

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