An annotated list of phytophagous insects on immature black walnut in southern Illinois was compiled between 26 April, 1974, and 9 October, 1975. Approximately 300 species, in 10 orders, were collected by hand-picking and sweeping. Notes taken on the various species included types of feeding damage, instars present, predators and parasites, and distribution in southern Illinois. Lepidoptera (about 80 species collected) were responsible for the majority of damage observed.
Nixon, P. L. and McPherson, J. E.
"An Annotated List of Phytophagous Insects Collected on Immature Black Walnut Trees in Southern Illinois,"
The Great Lakes Entomologist: Vol. 10
, Article 8.
Available at: http://scholar.valpo.edu/tgle/vol10/iss4/8