Chrysochus auratus, the dogbane beetle, has been erroneously implicated as a pecan defoliator in the early literature. Alternative scenarios suggest other chrysomelid species that may have been responsible for the defoliation.
Williams, Charles E.
"Chrysochus Auratus (Coleoptera: Chrysomelidae) Absolved as Pecan Pest,"
The Great Lakes Entomologist, vol 21
Available at: https://scholar.valpo.edu/tgle/vol21/iss3/7