November 22, 2022 13:33 Updated Follow If you have a tree that is showing signs of distress, insect damage or disease, your best sources of information are DNR's Division of Entomology (http://www.in.gov/dnr/entomolo/) and Purdue University's Diagnostic Lab (http://www.ppdl.purdue.edu/ppdl/). Related articles Need Help? Have problems? Who do I call? What Agency? Are Indiana's forestlands disappearing? I want to fish and hunt; look for mushrooms; camp; hike on a coal mine. Who do I need to contact? Who can I contact about mud on the highway or material escaping trucks loaded with coal? How much does it cost to register plate my vehicle?