Archive:Poplar/Snowy Tree Cricket
From Bugwoodwiki
From: Ostry, Michael E.; Wilson, Louis F.; McNabb, Harold S., Jr.; Moore, Lincoln M. 1988. A guide to insect, disease, and animal pests of poplars. Agric. Handb. 677. Washington, DC: U.S. Department of Agriculture. 118 p.
Contents |
Importance
Female crickets injure new shoots by laying eggs in slits cut in the bark. Weakened shoots break over or die; injured trees grow crooked. Nymphs and adult crickets cause insignificant injury when they feed on foliage.
Look For:
• Broken over or dead branches.
• Longitudinal slits up to 2 inches long, resembling a zipper, located on the new growth or at the juncture of a broken or dead branch.
• Light green slender nymphs or adult crickets on the foliage.
|
| Adult snowy tree cricket. |
|
| Egg slit made by snowy tree. |
Biology
Female crickets mature in late summer and lay their eggs in new shoots after cutting a deep slit in the tissues. The eggs overwinter and nymphs emerge when the weather warms in spring. Nymphs feed throughout the spring and summer.
Monitoring
Inspect nursery whips on young plantings for shoot injury throughout the growing season. Examine 50 or more trees; if leaders are broken on 10 percent, consider treatment.
Control
• In nurseries, prune and destroy shoots with eggs.
• Spray infested nurseries or plantations for nymphs or adults with an insecticide recommended for foliage-feeding insects.
