Dave Hanson's Bugs and Tree Cruds 2010-10-25
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A collection of images identifying common insects, fungi and issues in our urban forest. Images have been compressed.
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Dave Hanson's Bugs and Tree Cruds 2010-10-25
- 1. 20Dave Hanson,,Universityof Minnesota 1-17-2010 Snow fleas on a warm January Day
- 2. 20Dave Hanson,,Universityof Minnesota Snow fleas on a warm January Day 1-17-2010
- 3. 20Dave Hanson,,Universityof Minnesota Brown ambrosia aphid on Jerusalem artichoke Notice the cornicles an Id characteristic for aphids Uroleucon ambrosiae
- 4. 20Dave Hanson,,Universityof Minnesota Ambrosia aphid on Jerusalem artichoke
- 5. 20Dave Hanson,,Universityof Minnesota Oleander aphids on Swamp milkweed Aphis nerii
- 6. 20Dave Hanson,,Universityof Minnesota Aphids and Associated damage On Green Ash
- 7. 20Dave Hanson,,Universityof Minnesota Woolly Aphids on speckled alder Paraprociphilus tessellatus
- 9. 20Dave Hanson,,Universityof Minnesota Balsam twig aphid Or Balsam wooly adelgid balsam fir
- 12. 20Dave Hanson,,Universityof Minnesota Hackberry Witches Broom ... Eriophyid mite and Powdery Mildew
- 13. 20Dave Hanson,,Universityof Minnesota Phomopsis galls on Bitternut Hickory 2010-3-22
- 14. 20Dave Hanson,,Universityof Minnesota Salt spray accumulation Causes witches brooms 2-23-2008 2-23-2008
- 15. 20Dave Hanson,,Universityof Minnesota Witches broom caused by Salt spray accumulation 2-7-2008
- 17. 20Dave Hanson,,Universityof Minnesota Hackberry Tatters ... Suspected - herbicide damage to buds 5-26-2004
- 18. 20Dave Hanson,,Universityof Minnesota Photo Taken: 7-29-09 Japanese Beetle – Defoliator... Popillia japonica Newman
- 19. 20Dave Hanson,,Universityof Minnesota Photo Taken: 8-24-09 Japanese Beetle – Defoliator... Popillia japonica Newman
- 20. 20Dave Hanson,,Universityof Minnesota Photo Taken: 8-24-09 Japanese Beetle – Defoliator... Popillia japonica Newman
- 21. 20Dave Hanson,,Universityof Minnesota Photo Taken: 7-29-09 Japanese Beetle – Defoliator... Popillia japonica Newman
- 22. 20Dave Hanson,,Universityof Minnesota European elm flea weevil A first report for Minnesota 8-05-09 Adult feeding activity Orchestes alni A side view of the Elm flea weevil. Photo credit: Jim Zablotny, USDA/APHIS/PPQ. Blotch mines caused by larvae
- 23. 20Dave Hanson,,Universityof Minnesota Emerald ash borer Agrilus planipennis Fairmaire
- 24. 20Dave Hanson,,Universityof Minnesota Purple Trap for Emerald ash borer (EAB) Photo taken at the Gateway Arch in St. Louis, MO July of 2008
- 25. 20Dave Hanson,,Universityof Minnesota Photo Taken: 9-14-09 Annual Cicada ... Tibicen canicularis
- 26. 20Dave Hanson,,Universityof Minnesota Photo Taken: 9-14-09 Locust borer ... Megacyllene robiniae
- 31. 20Dave Hanson,,Universityof Minnesota Eriophyid mites Spindle Gall on American Plum Photo: 6-17-09
- 32. 20Dave Hanson,,Universityof Minnesota Erineum Gall on Viburnum Photo: 9-01-09 Eriophyid mites
- 35. 20Dave Hanson,,Universityof Minnesota Sawfly and damage on Red pine
- 39. 20Dave Hanson,,Universityof Minnesota Eastern tent caterpillar On choke-cherry
- 41. 20Dave Hanson,,Universityof Minnesota Loopers or inch-worms on little-leaf linden
- 43. 20Dave Hanson,,Universityof Minnesota New Old Eastern spruce gall (adelgid) White spruce
- 44. 20Dave Hanson,,Universityof Minnesota Noxious Gall on Swamp white Oak (Cynipid wasp)
- 47. 20Dave Hanson,,Universityof Minnesota Wooly adelgid on Douglas fir
- 50. 20Dave Hanson,,Universityof Minnesota Walking stick or stick bug Photo: 9-12-09
- 51. 20Dave Hanson,,Universityof Minnesota Northern Paper Wasp Devouring a caterpillar Photo: 9-12-09
- 52. 20Dave Hanson,,Universityof Minnesota Photo Taken: 9-14-09 Boxelder bug – adult and nymphs 09-01-2009
- 55. 20Dave Hanson,,Universityof Minnesota Photo Taken: 9-14-09 Verticillium wilt ... Staining of vascular tissue
- 56. 20Dave Hanson,,Universityof Minnesota Photo Taken: 9-14-09 erticillium wilt ... Staining of vascular tissue
- 61. 20Dave Hanson,,Universityof Minnesota Photo Taken: 9-14-09 11-07-2009 Cedar-Hawthorn Rust or Cedar-apple rust
- 63. 20Dave Hanson,,Universityof Minnesota Cedar-Hawthorn rust Upper leaf surface on Hawthorn
- 66. 20Dave Hanson,,Universityof Minnesota Frost crack and associated internal decay Red maple
- 68. 20Dave Hanson,,Universityof Minnesota Sapsucker damage on: Eastern red cedar Butternut
- 72. 20Dave Hanson,,Universityof Minnesota Proper Staking ?? NO! Nails are not acceptable Wire through hose is not acceptable Connections Too Rigid
- 73. 20Dave Hanson,,Universityof Minnesota Proper Staking Wide straps Stem is protected 3 taut connections
- 76. 20Dave Hanson,,Universityof Minnesota Photo Taken: 9-14-09 Stinkhorn fungi Lizard’s claw Lysurus cruciatus A rare site in Anoka County,MN Photographer: Unknown
- 77. 20Dave Hanson,,Universityof Minnesota Photo Taken: 9-14-09 Stinkhorn fungi Ravenal’s stinkhorn Phallus ravenelii 2010-10-17
- 81. 20Dave Hanson,,Universityof Minnesota Photo Taken: 9-14-09 Wood decay fungi on poplar 2008-6-21
- 82. 20Dave Hanson,,Universityof Minnesota Photo Taken: 9-14-09 Wood decay fungi on American elm 2006-9-25
- 85. 20Dave Hanson,,Universityof Minnesota Photo Taken: 9-14-09 Wood decay fungi on Populus tremuloides 2006-10-2
- 86. 20Dave Hanson,,Universityof Minnesota Photo Taken: 9-14-09 Wood decay fungi on Box elder
- 90. 20Dave Hanson,,Universityof Minnesota Photo Taken: 9-14-09 Beaked Hazel ... Corylus cornuta
- 91. 20Dave Hanson,,Universityof Minnesota Photo Taken: 9-14-09 Smilax sp ... dioecious
- 93. 20Dave Hanson,,Universityof Minnesota Bristly greenbrier in winter Smilax tamnoides American hops in winter Humulus lupulus
- 96. 20Dave Hanson,,Universityof Minnesota Flowers of Sugar maple Male and Female flowers are present, often on the same branch
- 97. 20Dave Hanson,,Universityof Minnesota 4-17-2009 Flowers of red maple Male -Staminate Female - Pistillate
- 102. 20Dave Hanson,,Universityof Minnesota Photo Taken: 9-14-09 Austrian Pine Pinus nigra Pollen release
- 103. 20Dave Hanson,,Universityof Minnesota Photo Taken: 9-14-09 11-07-2009 Scots Pine Pinus sylvestris Buds, 2-needle pine, stomate lines
- 104. 20Dave Hanson,,Universityof Minnesota Photo Taken: 9-14-09 Sour Cherry ... Prunus cerasus
- 107. 20Dave Hanson,,Universityof Minnesota Photo Taken: 9-14-09 Black Chokeberry ... Aronia melanocarpa
- 108. 20Dave Hanson,,Universityof Minnesota Photo Taken: 9-14-09 Black Chokeberry ... Aronia melanocarpa
- 110. 20Dave Hanson,,Universityof Minnesota Photo Taken: 9-14-09 Red Oak ... Quercus rubra
Editor's Notes
- Curtis young – Joe Boggs and others from The Ohio State University identified this critter on hybrid elms in TRE
- Annual cicada – about the size of your thumb – much to large for EAB – but often green and often collected and put forth as a possible EAB find.
- Annual cicada – about the size of your thumb – much to large for EAB – but often green and often collected and put forth as a possible EAB find.