HGIC Web Site designed by The Canton Group Internet & Media Solutions (cantongroup.com), 2929 O'Donnell St., Baltimore, MD 21224, Project Manager: Zach Bauhaus. Client Project Manager: Mary Kay Malinoski (mkmal@umd.edu), Regional Specialists, Home and Garden Information Center, University of Maryland, Maryland Cooperative Extension , Ellicott City, MD.

Writers: M.K. Malinoski (diagnostic text), D.L. Clement (diagnostic text) and Chris Sargent (fact sheets and diagnostic text). Photograph editing: M.K. Malinoski.  Maintained by Mary Kay Malinoski, the Home and Garden Information Center (HGIC), College of Agriculture of the University of Maryland.

This site was initially funded by a grant from the United States Department of Agriculture CSREES.

Photograph Contributors:

Bugwood Network -Center for Invasive Species and Ecosystem Health: photos are credited below with coresponding Bugwood database numbers.

Asian Gypsy Moth

• John H. Ghent, USDA Forest Service, Bugwood.org
  1241013, 1241014, 1335001,1335003, 1335005, 1335006

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Asian Longhorned Beetle

• Dean Morewood, Health Canada, Bugwood.org
  1193003, 1193006
• Michael Bohne, , Bugwood.org
  1262008
• Dennis Haugen, USDA Forest Service, Bugwood.org
  1393002, 1393004, 1393010
• Pest and Diseases Image Library, , Bugwood.org
  2159067
• Larry R. Barber, USDA Forest Service, Bugwood.org
  3047028, 3047036, 3047042
• Pennsylvania Department of Conservation and Natural Resources - Forestry Archive, , Bugwood.org
  5016094, 5016096, 5016098,5017006, 5017009, 5017010, 5017015, 5017017, 5017022, 5017023, 5017025
• USDA APHIS PPQ Archive, USDA APHIS PPQ, Bugwood.org, 2652078

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Beech Bark Disease

• William M. Ciesla, Forest Health Management International, Bugwood.org
  0758083
• Linda Haugen, USDA Forest Service, Bugwood.org
  1400155
• USDA Forest Service - North Central Research Station Archive, USDA Forest Service, Bugwood.org
  1406128, 1406130
• Andrej Kunca, National Forest Centre - Slovakia, Bugwood.org
  1415032, 1415235, 1415241
• Pennsylvania Department of Conservation and Natural Resources - Forestry Archive,, Bugwood.org
  5019031, 5022028

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Citrus Longhorned Beetle

• Plant Protection Service Archive, Plant Protection Service, Bugwood.org
  1263009, 1263010
• Art Wagner, USDA APHIS PPQ, Bugwood.org
  1265100, 5147078, 5147080
• Pest and Diseases Image Library, , Bugwood.org
  2159055

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Emerald Ash Borer

• Joseph O'Brien, USDA Forest Service, Bugwood.org
  1301046, 5038050, 5038048
• Michigan Department of Agriculture, Bugwood.org
  1241012
• David Cappaert, Michigan State University, Bugwood.org
  1460072, 1460076, 2100048, 5343061, 1372003, 2106098, 1460071, 1372002
• David R. McKay, USDA APHIS PPQ, Bugwood.org
  1439002
• Pennsylvania Department of Conservation and Natural Resources - Forestry Archive, Bugwood.org
  5022047, 5022048
• Daniel Herms, The Ohio State University, Bugwood.org
  5171037
• Brian Sullivan, USDA APHIS PPQ, Bugwood.org
  9006049, 9006044
• Edward Czerwinski, Ontario Ministry of Natural Resources, Bugwood.org
  1439003
• Art Wagner, USDA APHIS PPQ, Bugwood.org
  5147090

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Elm Yellows

• Wayne A. Sinclair, Cornell University, Bugwood.org
  0656057, 0656058
• Pennsylvania Department of Conservation and Natural Resources - Forestry Archive,, Bugwood.org
  5021029, 5021035, 5021036, 5021038, 5021039, 5021061
  

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Granulate Ambrosia Beetle

• J.R. Baker & S.B. Bambara, North Carolina State University, Bugwood.org
  5159029,
• G. Keith Douce, University of Georgia, Bugwood.org
  1879050, 1879056
• Will Hudson, University of Georgia, Bugwood.org
  2912072
• Laura Lazarus, North Carolina Division of Forest Resources, Bugwood.org
  2109096, 2109095
• Natasha Wright, Florida Department of Agriculture and Consumer Services, Bugwood.org
  5209016, 5209017

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Oak Wilt

• John N. Gibbs, Forestry Commission, Bugwood.org
  0725090, 0725093
• William M. Ciesla, Forest Health Management International, Bugwood.org
  0758073
• Joseph O'Brien, USDA Forest Service, Bugwood.org
  1301020, 5030069, 5032025, 5039063, 5045006, 5046017
• Paul A. Mistretta, USDA Forest Service, Bugwood.org
  1501039
• Ronald F. Billings, Texas Forest Service, Bugwood.org
  3226030
• Minnesota Department of Natural Resources Archive, Minnesota Department of Natural Resources, Bugwood.org
  4213097
• Fred Baker, Utah State University, Bugwood.org
  4215062
• D. W. French, University of Minnesota, Bugwood.org
  4215066
• USDA Forest Service - Forest Health Protection - St. Paul Archive, USDA Forest Service, Bugwood.org
  5030086
  

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Pink Hibiscus Mealybug

• Lance S. Osborne , Professor of Entomology, University of Florida, Mid-Florida Research and Education Center, Apopka, FL
  
  

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Viburnum Leaf Beetle

• E. Richard Hoebeke, Cornell University, Bugwood.org, 1300035, 130014
• Paul Weston, Cornell University, Bugwood.org
  9005048, 9005047, 9005050, 9005049, 9005044, 9005045
  

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Sudden Oak Death

• Joseph O'Brien, USDA Forest Service, Bugwood.org
  1427006, 1427036, 1427053, 1427086, 1427093, 1427103, 1427111, 5041037, 5041048, 5041050
  
• Bruce Moltzan, Missouri Department of Conservation, Bugwood.org
  5028037, 5028043
• Nina Shiskoff, USDA-ARS FDWSRU
  SOD symptoms on lilac
  

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