Blepharidopterus (Diaphnocoris) chlorionis
Pest description and crop damage Small green plant bugs, overwintering as eggs. As honey locust buds expand, eggs hatch and nymphs feed on new growth. Adults can be found a month after nymphs first appear; they also feed on new growth. Feeding can cause stippling and growth distortion. Heavy feeding can cause defoliation. There is one generation per year.
Nymphs can be knocked off leaves with a high-pressure spray of water.
Timing is focused on the newly expanding buds, targeting nymphs.
For more information
Johnson, W.T. and H.H. Lyon (1991), Insects That Feed on Trees and Shrubs, 2nd ed., Cornell University Press (p. 404).
PNW Nursery IPM: Honeylocust plant bug (http://oregonstate.edu/dept/nurspest/honeylocust_plant_bug.htm)