Global climate change is increasing the rate of range expansion for many species across the globe, creating an urgency to understand the variables involved in predicting the spread of the hemlock woolly adelgid (HWA; Adelges
tsugae) throughout forests of the eastern United States.
Carriere (Pinales: Pinaceae), to determine its effectiveness on the hemlock woolly adelgid, Adelges
tsugae Annand (Aphidomorpha: Adelgidae) (Eisenback et al.
Sasajiscymnus tsugae (Coleoptera: Coccinellidae) has been reared as a predator that specifically targets the Hemlock Woolly Adelgid (HWA, Hemiptera: Adelgidae: Adelges
tsugae), a very destructive pest of the Eastern and Carolina Hemlock.
The tree crown distribution of hemlock woolly adelgid, Adelges
Oviposition, development, and feeding of Scymnus (Neopullus) sinuanodulus (Coleoptera: Coccinellidae): a predator of Adelges
tsugae (Homoptera: Adelgidae).
Release in North America and review of bionomics in Europe of insect predators of the balsam woolly aphid, Adelges
caroliniana Engelm) are currently declining rapidly due to infestation by the hemlock woolly adelgid (HWA, Adelges
tsugae Annand) and little regeneration is expected (Orwig and Foster, 1998; Preisser et al.
Evidence of a polymorphic life cycle in the hemlock woolly adelgid, Adelges
tsugae Annand (Homoptera: Adelgidae).
Over the past two decades, several exotic pests, such as the balsam woolly adelgid, Adelges
piceae (Rathzeburg), beech scale, Cryptococcus fagisuga Lind.
Understanding the response of stands infested with hemlock woolly adelgid (HWA, Adelges
tsugae) is a critical step in identifying the influences this introduced insect will have on ecosystem processes and landscape dynamics.
Pinaceae) infested with Adelges
tsugae Annand (Hemiptera: Adelgidae) (Lu et al.
1999) found that the abundance of galls of Adelges