Ovipositor sheath of Gasteruption assectator (Linnaeus (28), G. boreale (29) and G. nigritarse (Thomson) (30). Scale bar 1 mm.

 
 
  Part of: Johansson N, Achterberg C van (2016) Revision of the Palaearctic Gasteruption assectator aggregate, with special reference to Sweden (Hymenoptera, Gasteruptiidae). ZooKeys 615: 73-94. https://doi.org/10.3897/zookeys.615.8857