Published February 27, 2025 | Version v1

Euura variator

  • 1. Museum of Natural History, University of Tartu, Vanemuise 46, 51003 Tartu, Estonia. & Ecology and Genetics Research Unit, PO. Box 3000, FI- 90014 University of Oulu, Finland.
  • 2. Senckenberg Deutsches Entomologisches Institut, Eberswalder Strasse 90, 15374 Müncheberg, Germany.
  • 3. Centre for Biodiversity Genomics, University of Guelph, 50 Stone Road East, N 1 G 2 W 1, Guelph, ON, Canada.
  • 4. Leibniz Centre for Agricultural Landscape Research, Eberswalder Str. 84, 15374 Müncheberg, Germany.
  • 5. Swedish Museum of Natural History, Box 50007, SE- 10405 Stockholm, Sweden.
  • 6. Liinalammintie 11 as. 6, FI- 14200 Turenki, Finland.
  • 7. Rypeveien 34 A, 3420 Lierskogen, Norway.
  • 8. Ecology and Genetics Research Unit, PO. Box 3000, FI- 90014 University of Oulu, Finland. & Marko.

Description

259 Euura variator (Ruthe, 1859)

Figs 266–267, 476–477

Nematus variator Ruthe, 1859: 308–310. Lectotype designated below.

Amauronematus godmani Benson, 1955: 104–105. Syn. nov.

Amauronematus galbiventris Lindqvist, 1960a: 130. Syn. nov.

Amauronematus longidens Lindqvist, 1962b: 13. Synonymy by Hellén (1970).

Diagnosis

Females are most similar to E. fasciata and E. obscuripes (toeniata group); see differences discussed under these species. Males might not always be distinguishable from those of the E. obscuripes (toeniata group) and vittata group specimens found in the same (sub)arctic habitats.

Female

5.0– 7.5 mm. Tegula pale or sometimes mostly black, metafemur usually completely or mostly pale, sometimes mostly black, abdomen ventrally extensively pale.

Male

4.0–6.0(6.5) mm. Tegula and metafemur black or partly pale, subgenital plate pale or sometimes black.

Best matches to godmani: ZMUO.044556 (female), ZMUO.059873, ZMUO.058922 (males).

Type material examined

Lectotype Nematus variator, here designated

ICELAND • ♀; Staudinger leg.; ZMHB, http://coll.mfn-berlin.de/u/dbcac6 / GBIF-GISHym2822.

Paralectotype Nematus variator

ICELAND • 1 ♀; same data as for preceding; SDEI, GBIF-GISHym4103.

Notes

GBIF-GISHym2822 is 6.5 mm long; GBIF-GISHym4103 is 7.7 mm long.

Holotype Amauronematus godmani

SWITZERLAND – Valais • ♀; Ferpècle [Glacier]; 2100–2400 m a.s.l.; 22 Jun. 1935; J.E. and R.B. Benson leg,; BMNH, B.M.TYPEHYM.1.688.

Notes

ZMUO.044556 is nearly a perfect morphological match.

Holotype Amauronematus galbiventris

SWEDEN – Torne Lappmark • ♀; Abisko; 68.35° N, 18.83° E; 17–22 Jun. 1954; J.E. and R.B. Benson leg.; BMNH, B.M.TYPEHYM.1.785.

Notes

Length 6.5 mm.

Holotype Amauronematus longidens

FINLAND – Inari Lapland • 1 ♀; Utsjoki; 69.91° N, 27.03° E; 16 Jun. 1960; O. Ranin leg.; MZH, http://id.luomus.fi/GL.3412.

Notes

Length 5.5 mm.

Host plants

Salix glauca, S. helvetica Vill., S. lapponum, S. reticulata.

Genetics

COI

Based on 35 specimens, maximum within-species distance is 4.56% and the nearest neighbours, diverging by a minimum of 0%, are Euura opacipleuris, E. fasciata, and E. semilactea.

Nuclear

Based on 30 specimens, maximum within-species distance is 0.98% (0.62% based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.37%, is Euura semilactea.

Distribution and material examined

Palaearctic. Specimens studied are from Austria, Finland, Iceland, Norway, Sweden, and Switzerland.

Notes

Published as part of 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), pp. 1-377 in European Journal of Taxonomy 977 on pages 185-186, DOI: 10.5852/ejt.2025.977.2799, http://zenodo.org/record/15019574

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Linked records

Additional details

References

  • Ruthe J. F. 1859. Verzeichniss der von Dr. Staudinger im Jahre 1856 auf Island gesammelten Hymenopteren. Entomologische Zeitung 20: 305-322. Available from https://www.biodiversitylibrary.org/page/8985559 [accessed 20 Nov. 2024].
  • Benson R. B. 1955. Some high alpine Nematine sawflies (Hym., Tenthredinidae). The Entomologist's Monthly Magazine, Fourth Series 91 (16): 103-105.
  • Lindqvist E. 1960 a. Drei neue Amauronematus - Arten (Hym., Tenthr.). Notulae Entomologicae 39 (1959) (4): 127-130.
  • Lindqvist E. 1962 b. Uber Amauronematus arcticola Ensl. und nahe verwandte Arten (Hym. Tenthr.). Notulae Entomologicae 42: 9-13.
  • Hellen W. 1970. Die Nematinen Finnlands II (Hymenoptera, Tenthredinidae). Tribus Nematini: Gattung Amauronematus Konow. Notulae Entomologicae 50: 1-37.