Heterarthrus 49, 50 lancets: 49 H. vagans DEI-GISHym31974 50 H. kamtchaticus HEVA-1264 51–54 H. vikbergi sp. nov. ♀ DEI-GISHym83572: 51 lateral 52 head frontal 53 head dorsal 54 abdomen apex ventral. 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