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This site serves as a doorway to the many Internet resources for aphid systematics, taxonomy, biology, and evolution. Many sites are easily found with a search engine if one knows what to look for, others are harder to find. Hopefully they will be listed here! If not, or if you find any errors, please contact Colin to correct, update, and improve the site.

If you're looking for information on specific aphid species and/or their host plants, your first visit should be to Aphids on the World's Plants.