Asian longhorned beetle
As a generalist pest, ALB poses a great
potential threat to eastern forests. Burning
firewood where you buy it is critical to
stopping the spread of this pest. Last
spring, the USA-NPN released an updated
Pheno Forecast for ALB in collaboration
with researchers at USDA. The new fore-
cast product offers several enhancements:
• Forecasts display the percentage
of adults that have emerged, from
first emergence, to 25% of adults
emerged, 50%, and 75% or more.
• Forecasts are available for the entire
country, and also denote states where
detections have been reported.
This includes South Carolina where
ALB was first reported in 2020.
Pheno Forecast map for ALB for May 20, 2024. Colors indicate the status of adult emergence. The status of a location is determined
by comparing local degree–day accumulations to an established degree-day accumulation threshold for the life-cycle stage.
Asian longhorned beetle by Linda Haugen, USDA Forest Service, Bugwood.org
16 CityTREES
