Extension > Garden > Diagnose a problem > What insect is this? > Trees and shrubs > Beetles, bugs, ants, and other insects without obvious wings - 1/3 inch - 1/2 inch long > Ash plant bug
Ash plant bug
Tropidosteptes amoenus
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Lyle Buss
Description: 3/8 inch long. Oval shaped body with a head and wings brown to black. A yellow triangle is present behind the head.
Where/When: Feeds ash leaves. Present June with a second generation July to September.
More information on Ash plant bugs