An apical loose bud gall, 2-2.5 cm in diameter and 3-3.5 cm long, the component leaflets rather loose with overall appearence similar to pine cone gall on willow. Elongate central cell containing the larva.
”- EP Felt, JM Clarke: (1915) 29th report of the State entomologist on injurious and other insects of the State of New York, 1913©
Reference: https://www.biodiversitylibrary.org/page/35015492