HL Issue 22 2009

HL Issue 21 2009

HL Issue 20 2009

HL Issue 19 2009

Disease Hotline Issue 22

Powdery mildew on crape myrtle. Photo provided by: Robert Lambe, Virginia Polytechnic Institute and State University, Bugwood.org

Insect Hotline Issue 22

Leopard moth adult. Photo provided by: Esmat M. Hegazi, University of Alexandria, Bugwood.org

Leopard moth and gallery. Photo provided by: Jean-Paul Grandjean, Office National des Forêts, Bugwood.org

What's Hot HL Issue 22

Features of Asian longhorned beetle. Photo provided by: Kenneth R. Law, USDA APHIS PPQ, Bugwood.org

Asian longhorned beetle exit holes and egg laying scar. Photo provided by: Kenneth R. Law, USDA APHIS PPQ, Bugwood.org

Egg laying scar on tree caused by Asian longhorned beetle. Photo provided by: Kenneth R. Law, USDA APHIS PPQ, Bugwood.org

Asian longhorned beetle adult. Photo provided by: Pennsylvania Department of Conservation and Natural Resources - Forestry Archive, Bugwood.org

Asian longhorned beetle larva in feeding gallery. Photo provided by: Steven Katovich, USDA Forest Service, Bugwood.org

Asian longhorned beetle larva. Photo provided by: Kenneth R. Law, USDA APHIS PPQ, Bugwood.org

Close-up of Japanese maple scale adults. Photo provided by: Central Science Laboratory, Harpenden Archive, British Crown, Bugwood.org

Ash borer larva. Photo provided by: David Cappaert, Michigan State University, Bugwood.org

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

Puss caterpillar. Photo provided by: Gerald J. Lenhard, Louiana State Univ, Bugwood.org

What's Hot HL Issue 21

Fall webworms. Photo provided by: B. A. Kunkel, Ornamentals IPM Extension Specialist, University of Delaware

Scoliid wasp. Photo provided by: B. A. Kunkel, Ornamentals IPM Extension Specialist, University of Delaware

Cicada killer with prey. Photo provided by: Howard Ensign Evans, Colorado State University, Bugwood.org

Saddleback caterpillars. Photo provided by: Robert L. Anderson, USDA Forest Service, Bugwood.org

Disease Hotline Issue 21

Horse chestnut leaf blotch. Photo by: M. Petitjean, University of Massachusetts Extension & found at: http://www.umassgreeninfo.org/fact_sheets/diseases/guignardia_leaf_blotch.pdf

Oak infested with oak anthracnose. Photo provided by: Joseph O'Brien, USDA Forest Service, Bugwood.org

Oak anthracnose on oak leaf. Photo provided by: Joseph O'Brien, USDA Forest Service, Bugwood.org

Close-up of oak anthracnose. Photo provided by: Robert L. Anderson, USDA Forest Service, Bugwood.org

Bacterial leaf scorch. Photo provided by: Randy Cyr, Greentree, Bugwood.org

Glassy-winged sharpshooter vectors Xylella fastidiosa in grape plants, the same bacteria responsible for BLS. A possible vector. Photo provided by: Reyes Garcia III, USDA Agricultural Research Service, Bugwood.org

Grass sharpshooter is also known to vector X. fastidiosa in grape plants. Another potential vector for BLS. Photo provided by: Jack Clark, University of California - Davis, Bugwood.org

Insect Hotline Issue 21

Early instar oak skeletonizer. Photo provided by: G. Keith Douce, University of Georgia, Bugwood.org

Oak skeletonizer. Larvae feed on undersides of the leaf and top side of leaf remains. White areas along veins are where insect molts from stage to stage and pupates. Photo provided by: Ronald S. Kelley, Vermont Department of Forests, Parks and Recreation, Bugwood.org

One color morph of yellownecked caterpillars. Photo provided by: Gerald J. Lenhard, Louiana State Univ, Bugwood.org

Color morph of yellownecked caterpillar. Photo provided by: Eric R. Day, Virginia Polytechnic Institute and State University, Bugwood.org

Color morph of yellownecked caterpillar. Photo provided by: Gerald J. Lenhard, Louiana State Univ, Bugwood.org

What's Hot HL Issue 20

Dogwood sawflies. Photo provided by: B. A. Kunkel, Ornamentals IPM Extension Specialist, University of Delaware

Disease Hotline Issue 20

Alfalfa mosaic virus on potato. Photo provided by: Howard F. Schwartz, Colorado State University, Bugwood.org

Cercospora leaf spot on Bigleaf Hydrangea. Photo found at: http://www.aces.edu/pubs/docs/A/ANR-1212/

Cercospora leaf spot on rose. Photo provided by: Paul Bachi, University of Kentucky Research & Education Center, Bugwood.org

Daylily leafstreak. Photo found at: http://www.umass.edu/umext/floriculture/fact_sheets/pest_management/daylily_rust_streak.htm

Insect Hotline Issue 20

The amount of azadirachtin present in a formulation varies and may reflect whether the
product is a Ready-to-Use (RTU) formulation or a concentrate.
Commercial applicators can buy AZA containing brands such as
Azatin, Azatrol, Azamax, etc. Home Garden trade names include
Safer BioNeem, Neem-Away Insect Spray, and others.


This image was copied from a website and modified to prevent promotion of a particular brand of neem products. The image is presented to show concentrated and RTU neem products. The University of Delaware does not discriminate or endorse the use of one particular product over others.

Culture Hotline Issue 19

Above is a photo of a style of compost bins. Photo found at: http://www.flickr.com/photos/tobin/193568007/

What's Hot HL Issue 19

Cicada killer adult wasp. Photo provided by: Jessica Lawrence, Eurofins Agroscience Services, Bugwood.org

Prey items brought back to the nest to have eggs laid on them. Photo provided by: Kenneth R. Law, USDA APHIS PPQ, Bugwood.org

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

Catalpa sphinx moth adult. Photo provided by: Herbert A. "Joe" Pase III, Texas Forest Service, Bugwood.org

Catalpa sphinx moth caterpillar. Photo provided by: Lacy L. Hyche, Auburn University, Bugwood.org

Catalpa sphinx moth caterpillar. Photo provided by: Lacy L. Hyche, Auburn University, Bugwood.org