A female of Ichneumon suspiciosus Wesmael, 1845, found hibernating in a chestnut shell buried and turned upside down in the ground; Belgium, Proven (Theetbos), 10 October 2019. Fons Verheyde.

 
 
  Part of: Verheyde F, Quicke DLJ (2022) ´╗┐Review of adult diapause in ichneumonid wasps (Hymenoptera, Ichneumonidae). Journal of Hymenoptera Research 91: 185-208. https://doi.org/10.3897/jhr.91.83618