Andrew Caudell was born in Indianapolis on August 18, 1872, and moved with his parents to a farm in Oklahoma where he grew up. He became interested in insects and later studied at Oklahoma Agricultural College. After a brief employment in Massachusetts with the Gypsy Moth Project, in 1898 he joined the U.S. Department of Agriculture, studied Orthoptera, and became custodian of Orthoptera at the U.S. National Museum. Study of this group of insects, but including Zoraptera, became his life’s work, and he published numerous papers on it. His other accomplishments included being president of the Entomological Society of Washington in 1915, and publishing with Nathan Banks “The Entomological Code. A code of nomenclature for use in entomology”. Married, and with one daughter, he died on March 1, 1936.