[cite:1185947

The collection holds more than 3.5 million insect specimens and is one of the largest university insect collections in the world. All groups of insects are represented in the collection, and we are recognized for our holdings of leafhoppers (Cicadellidae), beetles (Coleoptera), and true flies (Diptera).

The Triplehorn Insect Collection is housed within the Museum of Biological Diversity, located on the West Campus of the Ohio State University in Columbus, Ohio.

On 29 April, 2005, the Ohio State Insect Collection was renamed in honor of Dr. Charles A. Triplehorn, Professor of Entomology and Curator at OSU between 1962 and 1992.

The C.A. Triplehorn Insect Collection is, apparently, still known by its original acronym, OSUC.