Tag Archives: Hot in July

What’s Hot HL Issue 15?

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Yucca plant bug adult.  Photo provided by:  Jim Baker, North Carolina State University, Bugwood.org

 

 

Serpentine leaf miner on Magnolia.  Photo by:  Patti Kunkel

 

 

 

Redheaded flea beetle adult on Joe Pye weed.

 

 

 

Close-up of redheaded flea beetle adult.  Photo by:  Brian A. Kunkel, University of Delaware, Ornamentals IPM Extension Specialist

 

 

 

Palestriped flea beetle on cabbage.  Photo provided by:  Brian A. Kunkel, University of Delaware, Ornamentals IPM Extension Specialist

 

 

 

Invasive Insects to WATCH for because there are no recorded instances in Delaware yet!!

Ash trees with thinning canopies due to EAB feeding.  Photo provided by:  Brian A. Kunkel, University of Delaware

 

 

Epicormic growth and thinning canopy resulting from EAB feeding.  Photo provided by:  Eric R. Day, Virginia Polytechnic Institute and State University, Bugwood.org

 

 

 

 

Emerald Ash Borer (EAB) adult.  Photo provided by:  Debbie Miller, USDA Forest Service, Bugwood.org

 

 

 

Split bark on trunk or branches of ash trees may indicate the presence of EAB.  Photo provided by:  Brian A. Kunkel, University of Delaware

 

 

 

 

 

Notice the serpentine tunnels caused by EAB feeding.  Larva is next to the tip of the finger.  Tunnels are directly underneath the bark of the tree and are packed with frass.  Photo provided by:  Brian A. Kunkel, University of Delaware

 

 

 

 

Oviposition scar caused by female Asian longhorn beetles (ALB).  Photo provided by:  Dennis Haugen, USDA Forest Service, Bugwood.org

 

 

 

 

 

Damage caused by ALB.  Photo provided by:  Dennis Haugen, USDA Forest Service, Bugwood.org

 

 

 

 

 

 

Emergence hole caused by an emerging ALB adult.  Photo provided by:  Dennis Haugen, USDA Forest Service, Bugwood.org

 

 

 

 

 

Adult Asian longhorn beetle (ALB).  Photo provided by:  Dean Morewood, Health Canada, Bugwood.org

What’s Hot HL Issue 14?

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Flatids often produce waxy substance as feeding on plants.  Nymphs are settled on stem amongst the waxy substance.

 

 

 

Side view of some nymphs feeding.

 

 

 

 

Close-up of a nymph settled on the twig.

 

 

 

 

 

Nymphs without the waxy around them.  This and previous pictures of the flatids were provided by:  Brian A. Kunkel, University of Delaware, Ornamentals IPM Extension Specialist

 

Adult flatid.  Photo provided by:  David Cappaert, Michigan State University, Bugwood.org

What’s Hot HL Issue 17

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Bacterial leaf scorch. Photo provided by: Edward L. Barnard, Florida Department of Agriculture and Consumer Services, Bugwood.org

Yellow oxalis. Photo provided by: Ted Bodner, Southern Weed Science Society, Bugwood.org

Juniper scale adults. Photo by: United States National Collection of Scale Insects Photographs Archive, USDA Agricultural Research Service, Bugwood.org.

Dogwood sawflies feeding. Photo provided by: Brian Kunkel, Ornamentals IPM Specialist, University of Delaware

What’s Hot HL Issue 16

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Tree showing signs of Emerald Ash Borer damage. Photo provided by: Brian Kunkel, Ornamentals IPM Specialist, University of Delware

Emerald ash borer adult and serpentine tunnels packed with frass. Photo provided by: Eric R. Day, Virginia Polytechnic Institute and State University, Bugwood.org

Tree damaged by Asian Longhorn beetle. Photo provided by: Pennsylvania Department of Conservation & Natural Resources – Forestry Archive, Bugwood.org

Emergence hole of Asian Longhorn beetle. Photo provided by: Kenneth R. Law, USDA APHIS PPQ, Bugwood.org

Asian Longhorn beetle. Photo provided by: Photo provided by: Pennsylvania Department of Conservation & Natural Resources – Forestry Archive, Bugwood.org

Another picture of rose midge damage (bull-necking) and the white spots are midge larvae. Photos found at: http://oregonstate.edu/dept/nurspest/rose_midge.htm website and appears to have been taken by Robin Rosetta.

What’s Hot HL Issue 15

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Spruce spider mite damage. Photo provided by: Brian Kunkel, Ornamentals IPM Specialist, University of Delaware

Close-up of spider mite damage. Photo provided by: Brian Kunkel, Ornamentals IPM Specialist, University of Delaware

A cicada killer. Photo provided by: Edward L. Manigault, Clemson University Donated Collection, Bugwood.org

Lilac/ash borer adult. Photo provided by: Daniel Herms, The Ohio State University, Bugwood.org

Pupal case of a lilac/ash borer. Photo provided by: Whitney Cranshaw, Colorado State University, Bugwood.org