Publications for:

pest = Fenusella nana
crop = Birch (Betula)

found 2 publications:

2016

Sawflies (Hymenoptera, Symphyta) newly recorded from Washington State
Journal of Hymenoptera Research (2016) 49, 129-159
pestinfo wiki

2009

Current status of invasive alien birch-leafmining sawflies (Hymenoptera: Tenthredinidae) in Canada, with keys to species
The Canadian Entomologist (2009) 141 (3), 201-235
publishers website - pestinfo wiki