Euura annulata Prep.
Creators: name: Prous, Marko
name: Liston, Andrew
name: Monckton, Spencer K.
name: Kramp, Katja
name: Vårdal, Hege
name: Vikberg, Veli
name: Heibo, Erik
name: Mutanen, Marko
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Tenthredinidae
Euura
Euura annulata

description: 105 Euura annulata (Gimmerthal, 1834)
Figs 103, 337
Nematus annulatus Gimmerthal, 1834: 123–124. Syntype ♂ (specimen deposition unknown). Type locality: Estonia or Latvia.
Nematus (Nematus) xanthopterus Dahlbom, 1835b: 8. Replacement name for Tenthredo rumicis Linnaeus, 1758 sensu Fallén, 1808.
Nematus flavipennis Cameron, 1876a: 189. Syntype ♀ (BMNH?), not examined. Type locality: United Kingdom, Scotland, Rannoch and Kingussie. Synonymy by Brischke (1883).
Nematus leucocarpus André, 1880a: 145. Lectotype designated below. Primary homonym of Nematus leucocarpus Hartig, 1840. Syn. nov.
Nematus valesiacus W.F. Kirby, 1882: 394. Replacement name for Nematus leucocarpus André, 1880.
Pachynematus lacteipennis Benson, 1963: 162–164. Synonymy by Taeger & Blank (1998).
Commonly used names have been Pachynematus rumicis (Benson 1958a) and Nematus rumicis (Zhelohovcev & Zinovjev 1988).
Diagnosis
Female
Mostly black to extensively pale, head (always?) extensively pale around eyes, pterostigma pale, claws with small subapical tooth, valvula 3 short and gradually tapering. Lancet has 11–12 annuli, with teethlike setae, and basal 2–3 annuli without serrulae.
Male (differences from female)
Extensively to mostly pale.
Most similar species is E. gehrsi, from which it usually differs by its larger size and paler colouration. Paravalva of E. annulata is possibly more abruptly narrowed basally compared to E. gehrsi.An externally very similar species is also E. taegeri (character states in parentheses), from which it differs by having lancet with about 11 annuli (about 15 annuli), basal 2–3 annuli without serrulae (all annuli with serrulae), convex ventroapical margin of lancet (straight or concave), and slender valvispina. Another similar species is E. infirma, from which it differs in its larger size, paler colouration, broader valvula 3, basal 2–3 annuli without serrulae (all annuli with serrulae), convex ventroapical margin of lancet (straight or concave), and pseudoceps without apical filament (with filament).
Type material examined
Lectotype Nematus leucocarpus, here designated
SWITZERLAND • ♀; Alpes du Valais; Desbrochers leg.; ZIN, DEI-GISHym89375.
Holotype Pachynematus lacteipennis
AUSTRIA – Lower Austria • ♀; Semmeringgebiet, Raxalp; 47.70° N, 15.74° E; 1830 m a.s.l.; 3 Jun. 1957; R.B. Benson leg.; BMNH, B.M.TYPEHYM.1.789.
Host plants
Rumex spp. (Nyman et al. 2006; Macek et al. 2020). There can be up to two generations per year in central Europe (Weiffenbach 1985 [under the name Pachynematus rumicis]).
Genetics
COI
Based on 7 specimens, maximum within-species distance is 3.96% and the nearest neighbour, diverging by a minimum of 0.61%, is Euura gehrsi.
Nuclear
Based on 2 specimens, maximum within-species distance is 0.61%. The nearest neighbour, diverging by a minimum of 0.5%, is Euura gehrsi.
Distribution and material examined
Palaearctic. Specimens studied are from Austria, Finland, Germany, Iceland, Norway, Sweden, Switzerland, and the United Kingdom.
description: 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 48-49, DOI: 10.5852/ejt.2025.977.2799, http://zenodo.org/record/15019574