Albrecht, Anders Christian. 2015. “Identification Guide to Nordic Aphids Associated With Mosses, Horsetails and Ferns (Bryophyta, Equisetophyta, Polypodiophyta) (Insecta, Hemiptera, Aphidoidea)”. European Journal of Taxonomy, no. 145 (October). https://doi.org/10.5852/ejt.2015.145.