Gottfried S. Fraenkel

Gottfried Samuel Fraenkel (April 29, 1901 – October 27, 1984) was a German-born American insect physiologist and a professor of entomology at the University of Illinois. He is considered a founding figure in the field of insect nutrition and endocrinology. He also studied insect behavior and wrote an influential book along with D.L. Gunn, ''The Orientation of Animals'' (1940, 1961). Provided by Wikipedia