Narrow Results by:

Subject Specific Filters:

All Subject Filters are in use

Image Specific Filters:

  1. Descriptor:           

    Damage (6)
    Feature(s) (1)
    Larva(e) (1)

Joseph O'Brien's Images

Title: Plant Pathologist
Organization: USDA Forest Service
Unit: Forest Health Protection
Country: United States

Joe is a plant pathologist with the U.S. Forest Service in St. Paul, Minnesota. in addition to photography, his major interests include tree diseases in forests, woodlands and urban areas, hazard tree identification and mitigation, and mycology. Joe is a graduate of the University of Michigan (B.S. Forestry and M.S. Forest Pathology) and the University of Minnesota (Ph.D. Plant Pathology), and currently works at the Northern Research Station on the University of Minnesota's St. Paul campus.
Remove Filters: Insects(X) Tortricidae(X) 5 Sizes Available(X)
8 Images of 3 Subjects View Subject List View Image Details View Thumbnails

first prev Page: next last Display:

Image Subject Name Scientific Name Description
5036028 western spruce budworm Choristoneura freemani Feeding damage
1377036 spruce budworm Choristoneura fumiferana Feeding damage and pupa.
5036022 spruce budworm Choristoneura fumiferana
5036023 spruce budworm Choristoneura fumiferana
5036025 spruce budworm Choristoneura fumiferana feeding budworm
5036026 spruce budworm Choristoneura fumiferana feeding larvae
5036029 spruce budworm Choristoneura fumiferana
5054091 jack pine budworm Choristoneura pinus pinus mortality following bud worm

Page: