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A pioneering ant biologist and taxonomist, he spent decades studying insect diversity and helped shape modern understanding of ant classification. His work combined deep field experience, huge global collections, and an early enthusiasm for sharing scientific knowledge widely.

by W. L. Brown, Bertram Henry Majendie Hewett
William L. Brown, Jr. (June 1, 1922 – March 30, 1997) was an American entomologist best known for his work on ants. According to the Smithsonian-hosted William L. Brown, Jr. Digital Library, he published 273 scientific papers, most of them on ants, and became one of the leading ant biologists of the 20th century.
He was known as an energetic field naturalist as well as a taxonomist. The same Smithsonian summary describes him as an unusually well-traveled researcher whose collecting and research took him across the Americas, Europe, Africa, Asia, Australia, Madagascar, Sri Lanka, and the Pacific, helping build important scientific collections and advance the study of ant systematics and evolution.
Brown also cared deeply about making scientific information easier to share. He experimented early with new ways of organizing and distributing taxonomic data, and his name now lives on through the William L. Brown, Jr. Digital Library, a resource created to make ant taxonomy literature more widely available.