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Description

The ash plant bug (Tropidosteptes amoenus) belongs to a group of insects called “True Bugs” which are characterized by lacking hard wing covers like those found on beetles.

Their wings fold across their backs often appearing like an X. They can be found on the bottom side of green ash leaflets in June.

Ash Plant Bug Damage

Ash plant bugs are found on ash trees
in June

Plants Affected

Symptoms

  • Leaves turn yellow and are mottled as the bugs feed on leaf cell's juices.
  • Heavy feeding can kill leaves.

Controls

Cultural or Non-chemical Controls:

  • Well-watered trees tend to have fewer ash plant bugs and can withstand more feeding without dropping leaves.
  • In June wash ash plant bugs off the tree using a forceful jet of water. By late July this method will be ineffective as the adult bugs have wings and will return to the trees.

Chemical Controls:

  • A chemical application may be warranted on severely affected trees.

Ash Plant Bug Damage

Last updated: 9/13/2013 10:32:22 AM