APHIDS ON THE WORLD’S TREES

An Identification and Information Guide

This internet version of the work that we published in 1994 has been fully revised and updated, incorporating many nomenclatural changes and more than 300 species described since that date. We hope that you will find it easy to navigate around this site, and to find the information that you are looking for and the keys that you need to identify an aphid on any particular tree species. A website of course has certain advantages over a book in making information more accessible, but also some disadvantages, so that for those that prefer a printed version we have made it possible to print out any part of the text as required. For regular users, here are direct links to: HOST LISTS AND KEYS and accounts of the APHIDS

CONTENTS
Preface to 1994 book I Introduction - The association between aphids and trees - Life cycles and polymorphism	II The Trees and their Aphids - Notes on use of section - Morphology and key characters - Host lists and keys - Key to tree-dwelling polyphagous aphids	III The Aphids - Introduction - Systematic treatment of aphid genera IV Techniques	V Bibliography VI Index to species names of aphids VII Photographs of slide-mounted specimens

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