Benjamin Dann Walsh
Entomologist, farmer, and timber merchant. Student at Trinity College, Cambridge, 1827–31; fellow, 1833. Emigrated to the United States, where he farmed in Henry County, Illinois, 1838–51. Lumber merchant, Rock Island, Illinois, 1851–8. Retired from commerce in about 1858 and concentrated on entomology, making contributions to agricultural entomology. Suggested the use of natural enemies to control insect pests. Author of several papers in agricultural journals. Associate editor of the Practical Entomologist, 1865. Acting state entomologist, Illinois, 1867.