An official website of the United States government.

The .gov means it’s official.
Federal government websites always use a .gov or .mil domain. Before sharing sensitive information online, make sure you’re on a .gov or .mil site by inspecting your browser’s address (or “location”) bar.

This site is also protected by an SSL (Secure Sockets Layer) certificate that’s been signed by the U.S. government. The https:// means all transmitted data is encrypted — in other words, any information or browsing history that you provide is transmitted securely.

Annual Report

Image for the first content page of the item, linking to the full file.

Thumbnail of the first (or only) page of an additional file for this item.

Citation

Entomology Research Branch, Insects Affecting Man and Animals Section, Agricultural Research Service, United States Department of Agriculture. 1931. “Annual Report.” Special Collections, USDA National Agricultural Library. Accessed August 15, 2026, https://www.nal.usda.gov/exhibits/speccoll/items/show/7163.