Masked chafer white grub (notice lack of pattern of the spines)
Japanese beetle white grub (notice the v-shaped pattern to the spines)
Oriental beetle white grub (notice the parallel lines of spines)
These are three common white grub species that may be found in turfgrass.
Pupal skin sticking out of the trunk of a tree. Insect has emerged from the pupal skin which is left in the tree. Photo provided by Whitney Cranshaw, Colorado State University, bugwood.org
Adult Lilac/ash borer, Podosesia syringae, pinned for viewing. Photo provided by: Carroll Younce, USDA-ARS, bugwood.org
Photos for crabgrass have been posted to the site previously. Please use the search function to locate these images.
Rust found on Hypericum. Photo provided by: Bob Mulrooney, University of Delaware
Rust on upper leaf surface of hypericum. Photo provided by: Bob Mulrooney, University of Delaware
Pictures for fire blight have already been posted to the website. Please search for these images with the search function.