Light Brown Apple Moth (LBAM)

The Light Brown Apple Moth (LBAM) is an invasive pest that attacks over 250 agricultural crops (including citrus, grapes, and fruit trees) and 2,000 landscape plants (such as roses, jasmines, and mums). Adults are small tan moths (1/3-1/2 inch in length). Caterpillars are yellowish green and can often be found within a silk chamber under a rolled leaf edge.

This pest has the potential to severely damage residential landscapes, orchards, and agricultural crops. LBAM caterpillars feed on leaves and new growth, and can damage fruit. The spread of this pest throughout the county would be extremely costly to San Diego’s agricultural industry and require special handling and increased pesticide applications.

LBAM FemaleLBAM Female

Females are larger than males and usually have less distinct markings, but often have a distinct spot in the middle when the wings are closed.

LBAM MaleLBAM Male

 

 

Typical males have a forewing with a light brown area at the base, which is distinguishable from a much darker, red-brown area at the tip.

How can you help?

  • Don’t move this pest! LBAM can be spread by moving infested plants, fruits, and vegetables. If you live in an infested area, don’t move homegrown fruits and vegetables or outside plants from your yard. Green waste (except grass) should be bagged or placed in a closed bin for pick-up.

  • Keep an eye out! Look for LBAM where you work and live.

  • Bring possible LBAM samples or other pests into the County Entomology Lab for free identification. 

 

LBAM damage on apples.
LBAM damage on apples.
LBAM eggs on a leaf.
LBAM eggs on leaf.
LBAM larva on a leaf.
LBAM larva on a leaf.
LBAM damage on citrus.
LBAM damage on citrus.

Additional Resources