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 Sitobion avenae (Fabricius, 1775) Fig. 27 Diagnosis Aptera 1.2–3.5 mm , green with black muscle sclerites. Legs and antennae partly black. Siphunculi black. Cauda pale. Abdominal dorsum sclerotised, shiny, all green, all black, or green with grey or black transverse bars. Juveniles matt, apt. juv. green, al. juv. brown. Holocyclic, monoecious on grasses ( Poaceae ), exceptionally on Equisetum sylvaticum . Not ant-attended. Distribution D F N S.