Adorning streamlined bodies with predominant greenish hues, willow Gall Sawfly are arboreal craftsmen, expertly manipulating the leaves of their preferred willow hosts to form sheltered enclaves. As larvae, they exhibit herbivorous tendencies, selectively devouring the foliage which serves as both sustenance and sanctuary, while the adults are known for their brief, pollen-powered flights, playing unwitting roles in the pollination of their arboreal habitats.