Nation One of world’s largest moths with 10-inch wingspan found in US for first time, officials say August 18, 2022 Wyatte Grantham-Philips, USA TODAY Comments Off on One of world’s largest moths with 10-inch wingspan found in US for first time, officials say With a wingspan of 10 inches, the atlas moth is one of the biggest known moths in the world. It was found in Bellevue, Washington, last month.