Pest Detection

Insect Trapping

The Stanislaus County Pest Detection Program focuses on finding destructive insect pests and the plant diseases they may carry. The program is part of a three pronged approach to protect homeowners and the agricultural and horticultural industries in Stanislaus County: Pest Exclusion (link), Pest Detection and Pest Eradication (link). County Pest Detection Trappers, working year-round, act as detectives, examining strategically placed insect traps located in plants favored by specific invasive pests.

With homeowners' cooperation, a majority of traps are placed throughout local urban areas, which are the most common points of introduction. Some traps contain specific insect pheromones, while others use a food or color attractant to lure the target pest if it is present in the surrounding neighborhood. It is extremely important to find invasive pests before they become established and do serious damage. The most important component of the successful Pest Detection Trapping Program is the partnership and cooperation of homeowners in granting permission to host insect traps on private property. Through early detection, the likelihood of these pests becoming established in the state is lessened and the cost and environmental impact of eradication is minimized.

More Information

For additional insect and pest information for homeowners, please visit the University of California's Statewide Integrated Pest Management Program http://ipm.ucanr.edu/PMG/menu.homegarden.html webpage.

For more information on invasive insects, please visit the USDA sponsored Hungry Pests website https://www.aphis.usda.gov/aphis/resources/pests-diseases/hungry-pests/

More target pest profiles can also be found on CDFA's Insect Pest Profile Page https://www.cdfa.ca.gov/plant/PDEP/target_pests.html Click on the links below to find more information about specific target insects in Stanislaus County's Pest Detection program.

Questions about a trap placed in your yard?

Contact us - agcom50@stancounty.com



Apple Maggot
Asian Citrus Psylid
Glassy Winged Sharp Shooter
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Japanese Beetle
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European Grapevine Moth
Vine Meallybug
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Light Brown Apple Moth
Mediterranean Fruit Fly
Melon Fruit Fly
Oriental Fruit Fly
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Gypsy Moth
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European Corn Borer
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Mexican Fruit Fly
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Red Imported Fire Ant
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Mediterranean Fruit Fly
Melon Fruit Fly
Oriental Fruit Fly
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This program provides the second line of defense against exotic pests through the early detection of new introductions before they become widely established. Traps are placed in primarily urban areas to detect such insect pests as Mediterranean and Mexican fruit flies, Gypsy Moth, Japanese Beetle, Light Brown Apple Moth, Asian Citrus Psyllid and a host of other targeted pest species. Through early detection the likelihood of these pests becoming established in the state is lessened and the cost and environmental impact of eradiation is minimized.

5,560 pest detection traps were placed by our county trappers in 2014.