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Apricot

Other Pests You May See—Postharvest

On this page
  • Armillaria root rot (oak root fungus)
  • Crown gall
  • Phytophthora root and crown rot
  • Redhumped caterpillar
  • Pacific flatheaded borer
  • Peachtree borer
  • Shothole borer

Names link to more information on identification and management.

Click on photos to enlarge
Armillaria root rot
Armillaria root rot (oak root fungus)
Identification tip: White mycelial mats are evident at or below ground in trees infected with Armillaria.
Crown gall
Crown gall
Identification tip: Crown gall disease results in rough, abnormal galls on roots or trunk. The undifferentiated tissue of a crown gall is soft and spongy.
Phytophthora root and crown rot
Phytophthora root and crown rot
Identification tip: If you peel away the bark, the underlying wood of a Phytophthora canker is a dark, reddish brown.
Dying leaves and branches in a tree can be caused by crown gall, phytophthora root rot, and armillaria root rot.

 

Redhumped caterpillar
Redhumped caterpillar
Identification tip: The redhumped caterpillar has a striking appearance. The main body color is yellow and is marked by longitudinal reddish and white stripes; the head is bright red, and the fourth abdominal segment is red and enlarged.
 
Tree borers become secondary pests when they invade trees damaged by one of the pests above.

Pacific flatheaded borer
Pacific flatheaded borer
Identification tip:  The Pacific flatheaded borer leaves an oval hole in the bark surface upon emerging.

Peachtree borer
Peachtree borer
Identification tip: Look for frass at the base of the tree (frass above pupa in photo above).

Shothole borer
Shothole borer
Identification tip: Look for emergence holes in the bark.


Statewide IPM Program, Agriculture and Natural Resources, University of California
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Agriculture and Natural Resources, University of California

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