Older larva of Tomostethus nigritus on Fraxinus angustifolia, leg., det., coll., F. Verheyde, Ghent (BE), 30.IV.2019 Fons Verheyde.

 
 
  Part of: Verheyde F, Sioen G (2019) Outbreaks of Tomostethus nigritus (Fabricius, 1804) (Hymenoptera, Tenthredinidae) on Fraxinus angustifolia ‘Raywood’ in Belgium. Journal of Hymenoptera Research 72: 67-81. https://doi.org/10.3897/jhr.72.38284