@article{Johansson_Hall_2020, title={Nattflystekeln Enicospilus undulatus (Gravenhorst, 1829) (Ophioninae), en parasitoid på klöverspinnare Lasiocampa trifolii (Denis & Schiffermüller, 1775), ny för Sverige}, volume={141}, url={http://et-online.nu/index.php/contents/article/view/33}, abstractNote={<p>The Darwin wasp <em>Enicospilus undulatus</em> (Gravenhorst, 1829) is recorded as new to Sweden. The distinguishing characters between <em>E. undulatus</em> and the closely related <em>E. inflexus</em> (Ratzeburg, 1844) are illustrated. The host dynamics of <em>E. undulatus</em> with focus on the grass eggar <em>Lasiocampa (Pachygastria) trifolii</em> (Denis & Schiffermüller, 1775) are discussed. The paper also briefly presents <em>Metiopius croceicornis</em> Thomson, 1877 and <em>Gravenhorstia picta</em> Boie, 1836, two other conspicuous ichneumonids that probably also specialize in parasiting the grass eggar in Northern Europe. Finally, lepidopterists visiting localities for <em>L. trifolii</em> are encouraged to keep their eyes open for these potentially rare, but spectacular parasitoids.</p>}, number={3}, journal={Entomologisk Tidskrift}, author={Johansson, Niklas and Hall, Krister}, year={2020}, month={sep.}, pages={81–87} }