Sycamore Plant Bug
- 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
- 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.