Sycamore Plant Bug

    Sycamore Plant Bug

    Plagiognathus albatus

    sycamore plant bug

    Sycamore plant bug (Marion Murray, Utah State University Extension)

    sycamore plant bug damage

    Sycamore plant bug damage (Marion Murray, Utah State University Extension)

    sycamore plant bug damage

    Sycamore plant bug damage (Marion Murray, Utah State University Extension)

    Pest Description

    • adults: ~ 1/4 inch; yellowish brown with whitish wings
    • nymphs: smaller, lack wings and are yellowish brown

    Host Plants, Diet & Damage

    • sycamore and London planetree
    • suck sap out of leaves creating necrotic areas
    • feeding on young leaves may cause distortion
    • heavy feeding causes a tattered appearance in leaves

    Biology, Life Cycle & Damaging Life Stage

    • overwinter as eggs embedded in tree bark
    • eggs hatch in spring when leaves have expanded to about 1 1/2 inches
    • nymphs feed on top and bottom of leaves
    • individuals are present until mid-summer
    • one generation per year
    • nymphs and adults are the damaging stages

    IPM Recommendations

    • Manage trees to improve or maintain health.
    • Damage to trees is mostly aesthetic; tolerate pest.
    • Spray nymphs with a strong stream of water.
    • Apply an insecticide (carbamate; horticultural oil; insecticidal soap; pyrethroid ) about 1 week after budbreak to affected plants.
    • Apply a systemic neonicitinoid at budbreak.