Figures 55-63 from: 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

Figures 55-63 Heterarthrus vikbergi sp. nov. 55 ♀ DEI-GISHym83572 antenna 56 ♂ DEI-GISHym83573 antenna 57 DEI-GISHym31972 lancet 58–63 ♂ DEI-GISHym83573: 58 lateral 59 head frontal 60 head dorsal 61 abdomen apex dorsal 62 abdomen apex ventral 63 penis valve. Scale bar: 1mm.