Sphinctus serotinus, intermediate instars 25 showing exuviae.

 
 
  Part of: Shaw MR, Voogd J (2016) Illustrated notes on the biology of Sphinctus serotinus Gravenhorst (Hymenoptera, Tryphoninae, Sphinctini). Journal of Hymenoptera Research 49: 81-93. https://doi.org/10.3897/JHR.49.7705