Hermann August Hagen (1817–93)

German-born surgeon and entomologist. MD, Königsberg, 1840. Surgeon in Königsberg, 1843–66. Published several volumes on termites, 1855–60. With the help of Carl von Osten-Sacken in the US, published Synopsis of the Neuroptera of North America (1861). Emigrated to the US at the invitation of Louis Agassiz; assistant in entomology at the Museum of Comparative Zoology, Harvard, 1867. Assistant professor, 1868; professor, 1870.