Contact Us

Department of Entomology Contacts

Phone: 614-688-0218


Undergraduate Inquiries

Undergraduate Advisor: Joe Raczkowski


Graduate Inquiries

Graduate Program Coordinator: Sarah DeVilbiss
Graduate Studies Chair: Mary Gardiner


Insect ID and Pest Questions 

The C. Wayne Ellett Plant and Pest Diagnostic Clinic (CWEPPDC) at Ohio State University specializes in the identification of plant diseases, plant health problems, insects and insect related problems. Diagnosticians collaborate with specialists in plant pathology, entomology, horticulture, agronomy, natural resources, and other areas to identify pests, plant diseases, and cultural and environmental problems of plants.  

CWEPPDC Sample submission instructions 


Your local OSU Extension office has Agriculture and Natural Resource Educators able to answer farm, garden, home, and business questions.

OSU Extension Ohioline Factsheets: 
OSU Extension Ask an Expert: 
OSU Extension County Office Locator: