Headquarters Office
12300 Lower Azusa Road
Arcadia, CA 91006-5872
(626) 575-5471

South Gate Office
11012 South Garfield Ave.
South Gate, CA 90280
(562) 622-0402

L.A. County Online

Entomology and
Plant Pathology Laboratories

The Department operates Entomology and Plant Pathology Laboratories, which seek to protect consumers by identifying exotic insects (and other invertebrates), invasive weeds and plant pathogens entering Los Angeles County through truck, ship, airfreight, and parcel delivery operations. The laboratories provide rapid and accurate identifications to support the Pest Detection and Pest Exclusion programs and offer identification and information services for Los Angeles County residents, schools, governmental agencies, growers, nursery and pest control operators. Overall, the laboratories process over 8,000 pest specimens submitted annually.

If you would like to submit samples for identification or analysis, please use the following forms:

  1. Insect and other invertebrate specimen submission form
  2. Plant disease diagnosis/Plant & mushroom specimen submission form

Requests for pest identification are accepted for specimens originating in Los Angeles County only.

Oriental fruit fly Mediterranean fruit fly Japanese beetle Guava fruit fly Gypsy moth Melon fruit fly Emerald ash borer European corn borer Asian longhorned beetle Mexican fruit fly Khapra beetle European pine shoot moth

CLICK ON PHOTOS FOR MORE INFORMATION ABOUT THESE PESTS
Click HERE for this poster in PDF format / (9.98 MB)


Click on the left side image to open our "Field Guide to Target Insects in Pest Detection Programs"

INSECTS AND OTHER INVERTEBRATES
PESTS OF LANDSCAPES
PESTS IN AGRICULTURAL SETTINGS
Bagrada bug (2 pages)
Bagrada bug (2 pages)
Ficus whitefly (2 pages) Diaprepes root weevil (2 pages)
Guava fruit fly (1 page)
Harlequin bug (1 page)
Myoporum thrips (2 pages)
Olive psyllid (2 pages)
Olive psyllid (2 pages)
Red bug (1 page)
 
Tipu psyllid (2 pages)
 
 
PESTS OF STORED PRODUCTS, HOUSEHOLD GOODS AND STRUCTURES
PESTS THAT STING AND BITE
(PESTS OF MEDICAL IMPORTANCE)
 
PESTS OF HONEYBEE
AQUATIC PESTS 

PLANT DISEASES
Pierce’s disease of grape and oleander leaf scorch
Sudden oak death

Additional links:

University of California Statewide Integrated Pest Management Program
California Department of Food and Agriculture/The Entomology Laboratory