HL Issue 13 2008

HL Issue 12 2008

HL Issue 11 2008

HL Issue 10 2008

What's Hot HL Issue 13

Fireblight on crabapple. Photo by: William Jacobi, Colorado State University, Bugwood.org.

American dog tick on a blade of grass. Photo by: Jim Occi, BugPics, Bugwood.org.


American dog ticks. Photo by: Mat Pound, USDA Agricultural Research Service, Bugwood.org.


Comparison of deer ticks (left) and dog ticks (right) alongside a ruler. Photo by: Jim Occi, BugPics, Bugwood.org.

Female deer tick (black-legged tick) and a dime.


All stages of the deer (black-legged tick). Photos of only deer ticks found at http://www.ent.iastate.edu/imagegallery/ticks/deertick.html.


Septoria leafspot on rudbeckiae. Photo by Nancy Gregory, Plant Diagnostician, University of Delaware.


Septoria leafspot. Photo by Bob Mulrooney, Plant Pathologist, University of Delaware.

Disease Hotline Issue 13

Tree with symptoms of horsechestnut leaf blotch.

Horsechestnut leaf blotch. Photos of horsechestnut leaf blotch were found at the following website: http://www.ppdl.purdue.edu/PPDL/weeklypics/9-11-06.html.

This image of Phyllosticta leaf spot was taken from: http://ohioline.osu.edu/hyg-fact/3000/3044.html

This image of red thread was found at the following website: http://www.plantpath.wisc.edu/tddl/tddl/disimg/red/plant.jpg

Insect Hotline Issue 13

Tree skeletonized by Japanese beetle feeding.

Close-up of skeletonized leaves.

Japanese beetle adult.

Group of Japanese beetles feeding. Photos by Brian Kunkel, Ornamentals IPM specialist, University of Delaware.

Weed Hotline Issue 12

Yellow nutsedge. Photo by: Steve Dewey, Utah State University, Bugwood.org.

Flowering yellow nutsedge. Photo by: Joseph LaForest, University of Georgia, Bugwood.org.


Yellow nutsedge and nutlets. Photo by: Steve Dewey, Utah State University, Bugwood.org.

What's Hot HL Issue 12

Red headed ash borer adults. Photo by: Pennsylvania Department of Conservation and Natural Resources - Forestry Archive, Bugwood.org.



Rhododendron borer pictures above were found at http://ipm.ncsu.edu/current_ipm/otimages.htm.

Disease Hotline Issue 12

Cedar-apple rust on crabapple.

Cedar-apple rust on crabapple.

Cedar-apple rust on eastern red cedar.

Cedar-quince rust on juniper.

Cedar-quince rust on Chinese hawthorn.

Cedar-quince rust.

Iris leaf spot. Photos by: Bob Mulrooney, Plant Pathologist, University of Delaware.

Insect Hotline Issue 12

Below are some clearwing borers (Sesiidae) in our area:

Dogwood borer damage. Photo by: ohn A. Weidhass, Virginia Polytechnic Institute and State University, Bugwood.org.


Dogwood borer adults, female (top) and male (bottom). Photos by: James Solomon, USDA Forest Service, Bugwood.org.

Peachtree borer damage at soil line. Photo by: Eugene E. Nelson, , Bugwood.org.

Peachtree borer larvae feeding damage. Photo by: Eugene E. Nelson, , Bugwood.org.

Peachtree borer larva. Photo by: Clemson University - USDA Cooperative Extension Slide Series, , Bugwood.org.



Peach tree borer adults, female (top) and male (bottom). Photos by: Clemson University - USDA Cooperative Extension Slide Series (top), & Wendell Snow, USDA Agricultural Research Service (bottom), Bugwood.org.
Below are some flatheaded borers (Buprestidae) in our area:

Twolined chestnut borer adult. Photo by: Robert A. Haack, USDA Forest Service, Bugwood.org.

Twolined chestnut borer larva. Photo by: Robert A. Haack, USDA Forest Service, Bugwood.org.

Bronze birch borer damage. Photo by: Photo by USDA Forest Service - Northeastern Area Archive, Bugwood.org.

Sawdust frass-packed tunnels/galleries of bronze birch borer. Photo by: William M. Ciesla, Forest Health Management International, Bugwood.org.

Bronze birch borer adult. Photo by: Photo by Pennsylvania Department of Conservation and Natural Resources - Forestry Archive, Bugwood.org.


Below are some of the roundheaded borers (Cerambycidae) in our area

Locust borer adult. Photo by: David Cappaert, Michigan State University, Bugwood.org.

Locust borer galleries. Photo by: James Solomon, USDA Forest Service, Bugwood.org.

Roundheaded apple tree borer adult. Photo by: Pennsylvania Department of Conservation and Natural Resources - Forestry Archive, Bugwood.org.


Roundheaded borer larva (image is of Southern pine sawyer). Photo by: Clemson University - USDA Cooperative Extension Slide Series, Bugwood.org.


Redheaded ash borer adult and emergence hole. Photo by: Howard Ensign Evans, Colorado State University, Bugwood.org.

Redheaded ash borer galleries. Photo by: Gyorgy Csoka, Hungary Forest Research Institute, Bugwood.org.