Invasive Shothole Borers

Red Willow

Salix laevigata

 

Native reproductive host

Symptoms: staining, frass

Other pests: UC IPM

Resources: USDA Profile

 

Staining and frass around a PSHB entry-hole on red willow. Source: Monica Dimson, UCCE
Staining and frass around a PSHB entry-hole on red willow. Source: Monica Dimson, UCCE