Tree showing signs of Emerald Ash Borer damage. Photo provided by: Brian Kunkel, Ornamentals IPM Specialist, University of Delware

Emerald ash borer adult and serpentine tunnels packed with frass. Photo provided by: Eric R. Day, Virginia Polytechnic Institute and State University, Bugwood.org

Tree damaged by Asian Longhorn beetle. Photo provided by: Pennsylvania Department of Conservation & Natural Resources – Forestry Archive, Bugwood.org

Emergence hole of Asian Longhorn beetle. Photo provided by: Kenneth R. Law, USDA APHIS PPQ, Bugwood.org

Asian Longhorn beetle. Photo provided by: Photo provided by: Pennsylvania Department of Conservation & Natural Resources – Forestry Archive, Bugwood.org

Another picture of rose midge damage (bull-necking) and the white spots are midge larvae. Photos found at: http://oregonstate.edu/dept/nurspest/rose_midge.htm website and appears to have been taken by Robin Rosetta.