Euura bebbianae
Gall: an abrupt laternal swelling on twigs of Salix bebbiana.
Range: Boulder, Colorado. Many males and females bred on galls on Salix bebbiana collected near the mouth of Boulder Canyon (S. A. Rohwer). (Type locality.)
”- SA Rohwer: (1912) The Sawflies of Boulder County, Colorado©
Reference: https://www.biodiversitylibrary.org/page/29650370#page/118/mode/1up