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Box Elder

Acer negundo

 

Native reproductive host

Symptoms: staining, frass

Other pests: UC IPM

Resources: USDA Profile

Staining on Box elder. Source: John Kabashima, UCCE
Staining on Box elder. Source: John Kabashima, UCCE

 

Staining on Box elder. Source: John Kabashima, UCCE
Entry-holes and frass on PSHB-infested box elder (Monica Dimson / UC Cooperative Extension)
Staining and wet frass from PSHB boring activity on box elder (Monica Dimson / UC Cooperative Extension)
Frass
PSHB symptoms on Box elder (Akif Eskalen / UC Riverside)