Identification guide to Nordic aphids associated with mosses, horsetails and ferns (Bryophyta, Equisetophyta, Polypodiophyta) (Insecta, Hemiptera, Aphidoidea) Author Albrecht, Anders Christian text European Journal of Taxonomy 2015 2015-10-21 145 1 55 journal article 22370 10.5852/ejt.2015.145 5743d321-5138-4b7e-81df-a2701a38dc44 2118-9773 3787410 F6A3EA6C-9080-4DC7-9EF9-4C4DBEB4086F Rhopalosiphum nymphaeae (Linnaeus, 1761) Fig. 33 Diagnosis Aptera 1.5–2.5 mm , brown to olive, dusted with greyish wax, particularly on venter and margins, including legs and antennae. Siph. swollen, with a distinct constriction before the apical flange. Holocyclic, dioecious, alternating between Prunus and many unrelated, mostly aquatic or semiaquatic plants. Not ant-attended. Fig. 33. Rhopalosiphum nymphaeae (Linnaeus, 1761) . Aptera on Myripohyllum spicatum . Recorded Pteridophyta hosts Marsileaceae : Marsilea quadrifolia , M. strigosa ; Salviniaceae : Azolla caroliniana , A. filiculoides , Salvinia auriculatia , S. natans . Distribution D F N S.