2 Heterarthrus wuestneii cocoon in mine on Acer campestre, Germany, Tübingen, 18.06.2004 (Photo J. Späth) 3 H. vagans mature larva, ventral, Sweden, Abisko National Park, 27.08.2018 4 H. vikbergi sp. nov. holotype ♀ 5 H. vikbergi sp. nov. paratype ♂. Scale bar: 1mm.

  Part of: Liston A, Mutanen M, Viitasaari M (2019) On the taxonomy of Heterarthrus (Hymenoptera, Tenthredinidae), with a review of the West Palaearctic species. Journal of Hymenoptera Research 72: 83-126. https://doi.org/10.3897/jhr.72.39339