Host Plants:
Box Elder Trees, Manitoba Maple, Silver Maple, Ash Trees and sunny sides of buildings in late summer and fall.
Damage:
They do not bite or sting. They do not damage structures and generally a minor plant feeder and rarely cause significant tree damage. They are considered a nuisance pest rather that a landscape threat.
Description and lifecycle:
About 12 to 14 mm long with a black body and distinct red or orange lines on the thorax and wings. Nymphs are bright red with black markings. Spring: Adults emerge from overwintering sites and lay eggs on host trees. Summer: Eggs hatch into red nymphs that feed on seeds and leaves. Late summer/fall: Adults cluster on warm surfaces and enter buildings to overwinter. Winter: remain dormant inside walls, attics and other sheltered areas. Typically, only one generation per year.
Control Measures:
Seal cracks and gaps around windows, doors, siding and foundations. Reduce seed-producing host trees near structures. Apply a insecticide treatment in late summer/early fall before clusters begin.
CALL SHADY LANE EXPERT TREE CARE TO PROVIDE RECOMMENDATIONS
