Hæggström, Carl-Adam. 2013. “The Hawthorn Moth <i>Scythropia crataegella</I> (Lepidoptera: Yponomeutidae) Is Probably Fairly Common in Mariehamn, Åland Islands, Finland”. Entomologica Fennica 24 (2):122-28. https://doi.org/10.33338/ef.8349.