Friday, July 24, 2009

What's Hot HL Issue 17


Fall webworms and webbing on terminal branches. Photo by: Brian Kunkel, Ornamentals IPM Specialist, University of Delaware.

Cicada killer adult. Photo provided by: Jessica Lawrence, NC State Entomology Department, Bugwood.org.

Cicadas captured and paralyzed by female cicada killer to provision her chambers. Photo by: Kenneth R. Law, USDA APHIS PPQ, Bugwood.org.

Clavate tortoise beetle. Photo by: David Cappaert, Michigan State University, Bugwood.org.

Thistle tortoise beetle. Photo by: David Cappaert, Michigan State University, Bugwood.org.

Thistle tortoise beetle larva. Photo by: David Cappaert, Michigan State University, Bugwood.org.


Rose midge larvae (white spots) on rose. Photo provided by: http://oregonstate.edu/dept/nurspest/rose_midge.htm.

Powdery mildew on flowering dogwood. Photo by: Mary Ann Hansen, Virginia Polytechnic Institute and State University, Bugwood.org.

Cultural Hotline Issue 17


Severely drought stressed willow. Photo provided by: Randy Cyr, Greentree, Bugwood.org.

Insect Hotline Issue 17


European fruit lecanium on blueberry. Photo provided by: Jerry A. Payne, USDA Agricultural Research Service, Bugwood.org.


Fletcher scale. Photo provided by: Whitney Cranshaw, Colorado State University, Bugwood.org.

Lecanium scales on Celtis laevigata. Photo provided by: James Solomon, USDA Forest Service, Bugwood.org.

Disease Hotline Issue 17


Cedar-quince rust on 'Bradford' Callery pear fruit. Photo by Bob Mulrooney, Plant Pathologist, University of Delaware

Friday, July 17, 2009

What's Hot HL Issue 16


Aphids. Photo by: Whitney Cranshaw, Colorado State University, Bugwood.org.

Euonymus scale infestation. Males are elongate and white. Females are gray to brown. Photo provided by: Lisa Ames, University of Georgia, Bugwood.org.


Japanese beetle adult feeding. Photo by: David Cappaert, Michigan State University, Bugwood.org.

Close-up of a Japanese beetle head. Photo by: Susan Ellis, USDA APHIS PPQ, Bugwood.org.

Azalea whitefly on azalea. Photo by: Brian Kunkel, Ornamentals IPM Specialist, University of Delaware.

Insect Hotline Issue 16


Distant view of bald cypress rust mite damge.

Bald cypress rust mite damage on branch (close-up).

Bald cypress rust mites.
All photos provided by Dr. Casey Sclar, Plant Health Care Division Leader, Longwood Gardens.

Disease Hotline Issue 16


Powdery mildew on Norway Maple. Photo by: Andrej Kunca, National Forest Centre - Slovakia, Bugwood.org.

Powdery Mildew on Norway maple. Photo by: Petr Kapitola, State Phytosanitary Administration, Bugwood.org.

Phyllosticta leaf spot on Leucothoe. Photo by: Paul Bachi, University of Kentucky Research & Education Center, Bugwood.org.


Phyllosticta leaf spot on Leucothoe. Image shown is a A single leaf spot with small, black spore-producing bodies ("pycnidia") with white ooze containing spores. Photo provided by: Paul Bachi, University of Kentucky Research & Education Center, Bugwood.org.



Asexual spores of Phyllosticta fungus. Photo by: Paul Bachi, University of Kentucky Research & Education Center, Bugwood.org.

Phyllosticta leaf spot on crape myrtle. Photo by: Division of Plant Industry Archive, Florida Department of Agriculture and Consumer Services, Bugwood.org.

Phyllosticta leaf spot on highbush blueberry. Photo by: Division of Plant Industry Archive, Florida Department of Agriculture and Consumer Services, Bugwood.org.