Euura stordalensis ( Strand, 1905 )

Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik & Mutanen, Marko, 2025, West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae), European Journal of Taxonomy 977, pp. 1-377 : 173-174

publication ID	https://doi.org/10.5852/ejt.2025.977.2799
publication LSID	lsid:zoobank.org:pub:73DA044B-EB3D-4BF1-97EA-7430036DEEE0
persistent identifier	https://treatment.plazi.org/id/03BCA619-FF74-D8BF-9724-FB02FBE9FB2B
treatment provided by	Plazi (2025-03-03 10:25:10, last updated by Julia 2025-03-13 14:33:04)
scientific name	Euura stordalensis ( Strand, 1905 )
status

Treatment

244 Euura stordalensis ( Strand, 1905)

Figs 263, 473

Nematus stordalensis Strand, 1905: 7–8 . Lectotype designated by Vikberg (1970a).

Nematus marginifer Strand, 1905: 8 . Synonymy by Benson (1962).

Amauronematus cogitatus MacGillivray, 1919: 15–16 . Synonymy by Benson (1962).

Amauronematus speciosus Hellén, 1951b: 106–107 . Lectotype designated by Vikberg (1970a). Syn. nov.

Diagnosis

Closely related to E. opacipleuris , see differences mentioned under that species.

Type material examined

Lectotype Nematus stordalensis

CANADA – Ellesmere Island • ♀; Havnefjorden, Havnen; 77.9° N, 81.7° W; 18 Jun. 1900; ZMUN, NHMO:1000200592 / PR316VV. GoogleMaps

Notes

Length 6.7 mm. Best morphological match is N13682 View Materials (about 6 mm and slightly darker).

Holotype Nematus marginifer

CANADA – Ellesmere Island • ♂; Beistadfjorden (Bunden av Kjödfjorden); 77.9° N, 81.7° W; 9 Jun. 1899; Simmons leg.; ZMUN, NHMO:1000199953 / PR317VV. GoogleMaps

Notes

Penis valve ( Vikberg 1970a: fig. 7) not distinguishable from European specimens (e.g., DEIGISHym12097).

Holotype Amauronematus cogitatus

USA – Alaska • ♀; Demarcation Point ; 69.648° N, 141.233° W; 14 May 1914; F. Johansen leg.; emerged from cocoon 23 Jun. 1914; CNC, CNC1056982 View Materials . GoogleMaps

Lectotype Amauronematus speciosus

FINLAND – Kittilä Lapland • ♀; Muonio, Pallastunturi; 68.100° N, 23.999° E; 22 Jun. 1942; W. Hellén leg.; MZH, http://id.luomus.fi/GL.2762. GoogleMaps

Host plants

Salix herbacea and possibly other dwarf willows.

Genetics

COI

Based on 9 specimens, maximum within-species distance is 1.67% and the nearest neighbours, diverging by a minimum of 0%, are Euura rufa , E. schlueteri , and E. striata .

Nuclear

Based on 8 specimens, maximum within-species distance is 0.76% (0.69% based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.36%, is Euura opacipleuris .

Distribution and material examined

Holarctic. Specimens studied are from Canada, Finland, Norway, and the USA.

References

Benson R. B. 1962. Holarctic sawflies (Hymenoptera: Symphyta). Bulletin of the British Museum (Natural History). Entomology Series 12 (8): 379-409. https://doi.org/10.5962/bhl.part.5879

Hellen W. 1951 b. Eine neue Amauronematus - Art aus Schwedisch-Lappland. Acta Universitatis Lundensis 46 (2): 71-72.

MacGillivray A. D. 1919. The saw-flies (Tenthredinoidea) collected by the Canadian Arctic Expedition, 1913 - 18. Report of the Canadian Arctic Expedition 1913 - 18 3: 3-19. Available from https://www.biodiversitylibrary.org/page/38174946 [accessed 20 Nov. 2024].

Strand E. 1905. Coleoptera, Hymenoptera, Lepidoptera and Araneae. In: Report of the Second Norwegian Arctic Expedition in the ' Fram' 1898 - 1902. Vol. 1 (3). T. O. Brogger, Oslo [Kristiania]. https://doi.org/10.5962/bhl.title.55607

Vikberg V. 1970 a. The genus Pontania O. Costa (Hym., Tenthredinidae) in the Kilpisjarvi district, Finnish Lapland. Annales Entomologici Fennici 36 (1): 10-24.