Julius Theodor Christian Ratzeburg

Julius Theodor Christian Ratzeburg (16 February 1801– 24 October 1871) was a German zoologist, botanist, entomologist, and forester.

He became a private lecturer at the University of Berlin in 1828, when he was in contact with Alexander and Wilhelm von Humboldt.

Two years later,[1] he became professor of natural history there at the invitation of Friedrich Wilhelm Leopold Pfeil (1783-1859).

Ratzeburg was the author of important works on forestry and forest entomology, and is considered the founder of the latter discipline.

From 1827 to 1834, he wrote Medizinische Zoologie (Medical zoology) with Johann Friedrich von Brandt, which was a standard work for many years.