Euura ampla ZMUO.

250 Euura ampla (Konow, 1895) Figs 272, 478 Amauronematus amplus Konow, 1895: 184. Lectotype designated by Muche (1975). Diagnosis Black or rarely brown pterostigma, mostly black body with varying degree of whitish markings, valvula 3 (narrow and pointed in dorsal view), lancet (ventrally concave, 22–25 serrulae, short setae, apical serrulae practically without microdenticles, apical annuli perpendicular to serrulae), and penis valve (e.g., slightly curved valvispina at dorsal and ventral margins), and long malar space (1.3–2.0 times as long as diameter of front ocellus) enable identification of the species from the other Euura. Type material examined Lectotype Amauronematus amplus GERMANY – Brandenburg • ♀; Fürstenberg in Mecklenburg; 53.183° N, 13.167° E; May 1887; F.W. Konow leg.; SDEI, GBIF-GISHym4089. Host plants Betula pendula B. pubescens (including ssp. czerepanovii. Genetics COI Based on 11 specimens, maximum within-species distance is 1.52% and the nearest neighbours, diverging by a minimum of 0.3%, are Euura obscuripes and E. toeniata. Nuclear Based on 9 specimens, maximum within-species distance is 0.09% (0.11% based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.37%, is Euura toeniata. Distribution and material examined Palaearctic. Specimens studied are from Bulgaria, Finland, Germany, Russia, Slovakia, and Sweden.