Asphondylia salictaria
Salix [Salix exigua added as a placeholder]
Twig galls
Slightly enlarged or slender twigs, midges. A somewhat long series has been reared. They can be identified only by rearing and studying the insects.
β- EP Felt: (1940) Plant Galls and Gall MakersΒ©
Reference: https://babel.hathitrust.org/cgi/pt?id=wu.89041294323&view=1up&seq=75&skin=2021