How to Manage Pests
UC Pest Management Guidelines
Scientific Name: Forficula
In this Guideline:
Earwigs are about 0.5 inch long, shiny brown, and have a pair of
forcepslike structures at the back end of the abdomen. They are nocturnal and
their presence or damage may go unnoticed until harvest. There are two generations
Earwigs feed on fruit and foliage. Foliage feeding is of little
concern in mature trees. However, shoot-tip feeding on young trees may stunt
normal growth. Earwig feeding results in shallow, irregular feeding areas on the fruit surface.
Management requires the removal of daytime harboring sites and
prevention of access to fruit before it ripens.
from around the base of trees. Keep orchard clear of prunings, loose bark, or
debris under which earwigs could nest. Remove tree limbs that come in contact
with soil to prevent alternate access to trees.
Earwigs can be trapped by applying Tanglefoot or a similar
material applied to the tree to prevent their crawling up. Before emergence of
the nymphs, wrap the trunk tightly with plastic wrap so that the insects can't
crawl beneath the wrap. Apply the Tanglefoot to the plastic wrap, not the tree,
as it can soften bark. Remove the bands before winter.
Organically Acceptable Methods
Cultural controls are acceptable for use on organically grown
Monitoring and Treatment Decisions
Place boards or rolled-up newspapers in the
orchard in early spring and monitor weekly for earwigs that hide under the
boards or in newspapers. Treat at the beginning of spring activity when earwigs
||Amount to Use**
|When choosing a pesticide, consider information relating
to the impact on natural
enemies and honey bees and environmental impact. Not all registered pesticides are listed. Always read label of product being used.
||(Sevin) XLR PLUS
||MODE OF ACTION GROUP NUMBER1: 1A
||COMMENTS: Spray on trunks and crotches of trees at the
beginning of spring activity. Once high populations are found in trees such
an application will no longer be effective, and a foliar spray, which may
cause increased spider mite populations, is necessary. Do not apply more than 14 qt/acre/crop.
UC IPM Pest Management Guidelines: Apricot
UC ANR Publication 3433
Insects and Mites
W. W. Coates, UC Cooperative Extension, San Benito County
R. A. Van Steenwyk, Insect Biology, UC Berkeley
W. J. Bentley, UC IPM Program, Kearney Agricultural Center, Parlier
K. R. Day, UC Cooperative Extension, Tulare County
K. A. Kelley, UC Cooperative Extension, Stanislaus County
J. L. Caprile, UC Cooperative Extension, Contra Costa County
Acknowledgment for contributions to Insects and Mites:
L. C. Hendricks, UC Cooperative Extension, Merced County
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