AphidNet

General Information
            Aphids on the World's Plants - Blackman & Eastop's portal
                    Aphids on the World's Trees - Their seminal work, digitally
            Wikipedia
            Zipcode Zoo

Taxonomic and Phylogenetic
            Aphid Species File - Taxonomic, nomenclatural, and bibliographic database
            Fauna Europeae - Aphidoidea
            Tree of Life - Aphidomorpha
            uBio - New names in biology (Aphididae)

Pest Matters
            Influential Points - Biology and images of European Chaitophorinae and Lachninae
            Woody plant pests - University of Florida

Photographs
            Andy Jensen's photostream
            Biodiversidad Virtual - Aphidoidea of Iberia
            BioLib - Biological Library, Aphidoidea
            Bug Guide - North American aphids
            Bugwood: insectimages.org
            Plant-Diseases.com - Selection of European pest aphids

Molecular and Genomic
            AphidBase - Aphid genome database
            Barcode of Life BOLD Systems - Aphididae, Adelgidae, Phylloxeridae

Scientific Community
            9th International Symposium on Aphids - Beijing, China, 2013

Identification Keys and Faunistics
            Aphids of Karnataka - Fact sheets for 67 species common to Karnataka, India
            Aphids of Quebec - Species list, photographs, predators, parasites, references
            Aphids on the World's Trees - Blackman & Eastop's book, digitally
            Aphis of the midwestern USA - 3I interactive key
            Cinara of Japan - Dichotomous key

Aphid Collections of North America