Pristiphora geniculata larvae on Crataegus douglasii, Whatcom County, WA.
Part of: Looney C, Smith DR, Collman SJ, Langor DW, Peterson MA (2016) Sawflies (Hymenoptera, Symphyta) newly recorded from Washington State. Journal of Hymenoptera Research 49: 129-159. https://doi.org/10.3897/JHR.49.7104