Theodore D. A. (Theodore Dru Alison) Cockerell

Born in Norwood, England, on August 22, 1866, Theodore Dru Alison Cockerell became one of the most prolific naturalists of his era. He later built his career in the United States and is especially remembered as an entomologist and systematic biologist, with a major focus on bees and wasps.

Cockerell taught zoology at the University of Colorado from 1904 to 1934 and remained active in research for decades. Archives and university records describe him as an internationally known scholar whose work ranged across zoology, botany, ecology, and paleontology, while other accounts note that he published nearly 4,000 papers.

What makes his story especially striking is the sheer breadth of his interests. Alongside his famous work on bees, he studied fossils and the natural history of places from the American West to islands off California, leaving behind a huge scientific record before his death in San Diego on January 26, 1948.