What’s Hot HL Issue 9?

 

 

 

 

Currant sawfly (aka imported currantworm) adult.

 

 

 

 

Currant sawfly eggs on leaf.

 

 

 

 

Feeding damage caused by currant sawfly larvae

 

 

 

 

 

Close-up of currant sawfly larvae

All images of imported currantworm (currant sawfly) were provided by:  Whitney Cranshaw, Colorado State University, Bugwood.org.  Images for ambrosia beetle, hemlock woolly adelgid & a variety of lace bugs have been posted previously to this site.  Please use the search function to locate these photos.

Insect Hotline Issue 8


Hemlock woolly adelgid infestation. Specks on needles are crawlers moving on needles. Photo provided by: Pennsylvania Department of Conservation and Natural Resources – Forestry Archive, Bugwood.org

Close-up of hemlock woolly adelgid eggs. Photo provided by: Shimat Joseph, University of Georgia, Bugwood.org

Injecting insecticide into the tree is one method to control HWA. Photo provided by: Great Smoky Mountains National Park Resource Management Archive, USDI National Park Service, Bugwood.org

Injecting systemic insecticides into the soil (using a Kioritz here) is another way to treat for HWA. Photo provided by: Great Smoky Mountains National Park Resource Management Archive, USDI National Park Service, Bugwood.org

Spraying insecticides in another method to control HWA. Photo provided by: Great Smoky Mountains National Park Resource Management Archive, USDI National Park Service, Bugwood.org

What’s Hot HL Issue 6


Hemlock woolly adelgid egg masses. Photo provided by: Brian Kunkel, Ornamentals IPM Extension Specialist, University of Delaware

Roseslug sawfly damage to a rose leaf. Photo provided by: Brian Kunkel, Ornamentals IPM Extension Specialist, University of Delaware

Roseslug sawfly larva feeding on rose leaf. Photo provided by: Brian Kunkel, Ornamentals IPM Extension Specialist, University of Delaware

Cedar apple rust. Photo provided by: Daniel H. Brown, USDA Forest Service, Bugwood.org

Cedar apple rust. Photo provided by: USDA Forest Service – Region 8 Archive, USDA Forest Service, Bugwood.org

Insect Hotline Issue 8


Crawlers and egg masses of hemlock wooolly adelgids. Photo provided by: Pennsylvania Department of Conservation and Natural Resources – Forestry Archive, , Bugwood.org

Hemlock Woolly adelgid eggs. Photo provided by: Shimat Joseph, University of Georgia, Bugwood.org

Insect Hotline Issue 11


Hemlocks in decline or dying from Hemlock woolly adelgid infestations. Photo by: William M. Ciesla, Forest Health Management International, Bugwood.org.

Hemlock infested with Hemlock Woolly Adelgid. Photo by: Brian Kunkel, Ornamentals IPM Specialist, University of Delaware.

Close-up of cottony adults. Photo by: Brian Kunkel, Ornamentals IPM Specialist, University of Delaware.

Close-up of HWA crawler and adult. Photo by: Pennsylvania Department of Conservation and Natural Resources – Forestry Archive, , Bugwood.org.