Hermann August Hagen was a German entomologist who specialised in Neuroptera and Odonata. He had established himself as one of Europe's preeminent entomologists by 1867 when he accepted a position at Harvard University to curate the Museum of Comparative Zoology. In 1870 he became the first entomologist in the United States to hold the formal title, Professor of Entomology.
- Occupation
- entomologist, zoologist, university teacher, biologist
- Citizenship
- Kingdom of Prussia, United States
- Born
- May 30, 1817
- Died
- November 9, 1893
