Invasive Shothole Borers

Cottonwood & Poplar

Populus spp.

 

Native reproductive hosts:
Fremont cottonwood, Populus fremontii
Black cottonwood, Populus trichocarpa

Reproductive host:
Lombardy/Black poplar, Populus nigra (KSHB)

Symptoms: staining, frass

Other pests: UC IPM

Resources: USDA Profiles - Fremont cottonwood, Lombardy/Black poplar, Black cottonwood

 

Staining on Fremont cottonwood from PSHB activity. Source: Monica Dimson, UCCE
Staining on Fremont cottonwood from PSHB activity. Source: Monica Dimson, UCCE

 

 
 
Staining on Fremont cottonwood from PSHB activity. Source: Monica Dimson, UCCE