Euura salicis

301 Euura salicis (Linnaeus, 1758) Figs 310, 539 Tenthredo salicis Linnaeus, 1758: 557. Syntypes, sex not stated. No extant type material is known. Type locality: Sweden. Tenthredo capreae Linnaeus, 1758: 559. Syntype larvae. Adults were not described. No extant type material is known. Type locality: Sweden. Synonymy by Schmidt et al. (1998). Tenthredo notata O.F. Müller, 1776: 149. Syntypes, sex not stated. No extant type material is known. Type locality: Denmark. Synonymy by Brischke (1883). Nematus klugi Dahlbom, 1835a: pl. 40 fig. 6. Syntypes ♂♂ (MZLU), not examined. Type locality: Scandinavia. Synonymy by Brischke (1883) [confirmed by Schmidt et al. (1998)]. Nematus immaculatus Snellen van Vollenhoven, 1869: 95, 119. Lectotype ♂ (ZMAN), designated by Thomas (1987), not examined. Type locality: Belgium, Schoten. Synonymy by Brischke (1883). Nematus inflatus Thomson, 1871: 139–140. Lectotype designated below. Synonymy by Brischke (1883). Pteronidea salicis var. obscurior Enslin, 1916a: 415. Lectotype designated below. Synonymy by Muche (1974). Diagnosis Its large size (8.0–12.0 mm), extensively yellow body, and black costa and pterostigma enable its separation from other species of Euura. Type material examined Lectotype Nematus inflatus, here designated SWEDEN – Skåne • ♀; Lund; 55.71° N, 13.19° E; MZLU, MZLU2017309. Lectotype Pteronidea salicis var. obscurior, here designated GERMANY – Nordrhein-Westfalen • ♀; Solingen; 51.17° N, 7.07° E; ZSM, GBIF-GISHym3369. Paralectotype Pteronidea salicis var. obscurior GERMANY – Nordrhein-Westfalen • ♂; Solingen; 51.17° N, 7.07° E; ZSM, GBIF-GISHym3370. Host plants Salix spp., preferably S. fragilis (Roininen & Tahvanainen 1989), occasionally Populus (Çalmasur & Özbek 2006). More than one generation per year in suitable conditions (Pschorn-Walcher & Altenhofer 2000). Genetics COI Based on 5 specimens, maximum within-species distance is 0.78% and the nearest neighbour, diverging by a minimum of 5.32%, is Euura ferruginea. Nuclear Only one sequence available. The nearest neighbour, diverging by a minimum of 2.28%, is Euura anthracina. Distribution and material examined Palaearctic. Specimens studied are from Finland, France, Germany, and Sweden.