How to Manage Pests
UC Pest Management Guidelines
Scientific Name: Forficula auricularia
(Reviewed 12/09, updated 6/12)
In this Guideline:
DESCRIPTION OF THE PEST
Earwigs feed at night and can be found hidden
around the crowns of the plants during the day. They are slender brown insects,
about 0.5 to 0.75 inch (1.25 to 2 cm) long. They have
a conspicuous pair of pincers attached to the back end of the abdomen. The
adult wing covers are short and leathery. The pest becomes most destructive as
nymphs approach maturity from April to July.
Earwig feeding results in small deep holes in the fruit that can
only be distinguished from slug damage by the absence of slime. They will also inhabit
or catface open-ended fruit.
Cultural control methods to reduce earwig damage include:
Keeping the top of beds dry during the last
irrigation, as moisture favors increased damage.
Where practical, eliminate hiding places by
removing old senescent leaves.
Check the bottom of developing fruit for damage and treat if
feeding holes are present.
||Amount per acre
|(example trade name)
|The following are ranked with the pesticides having the greatest IPM value listed first—the most effective and least harmful to natural enemies, honey bees, and the environment are at the top of the table. When choosing a pesticide, consider information relating to air and water quality, resistance management, and the pesticide's properties and application timing. Not all registered pesticides are listed. Always read the label of the product being used.
||MODE OF ACTION GROUP
||COMMENTS: Repeat as
necessary using suitable ground or air equipment for proper distribution. Double treatment is usually more effective.
UC IPM Pest Management Guidelines:
UC ANR Publication
Insects and Mites
- E. T. Natwick, UC Cooperative Extension, Imperial County
- J. J. Stapleton, UC IPM Program, Kearney Agricultultural Center, Parlier
- C. S. Stoddard, UC Cooperative Extension, Merced & Madera counties
Acknowledgment for contributions to Insects and Mites:
- R. L. Coviello, UC Cooperative Extension, Fresno County
- L. D. Godfrey, Entomology, UC Davis
- C. B. Fouche, UC Cooperative Extension, San Joaquin County
- C. G. Summers, Entomology, UC Davis/Kearney Agricultural Center, Parlier
- J. B. LeBoeuf, AgriData Sensing, Inc., Fresno
- M. Murray, UC Cooperative Extension, Colusa/Glenn counties
Top of page