Aphids on the World's Herbaceous Plants and Shrubs
Chapter One
Host Lists and Keys?
Introduction
This work is based on the same rationale as our previous ones (Blackman and Eastop, 1984, 1994, 2000),
and has a similar format. It is specifically intended to complement the 1994 book Aphids on the World's
Trees, and thus complete a comprehensive account of the world's aphids in relation to their host plants. The
host-aphid lists and keys in this volume demonstrate, and in fact owe their feasibility to, the fact that most
aphids are relatively host specific, and that this specificity is most evident at the level of the host genus.
The number of aphid species recorded from any one plant genus varies greatly, from one to more than 260
(on Artemisia), and the proportion of these that are monophagous, oligophagous or polyphagous also shows
considerable variation. The reasons for these differences are presumably part physiological and part phylogeographic.
We hope that the lists will serve the supplementary purpose of providing a useful database for
anyone studying the origins and e ... read full excerpt from Aphids on the World's Herbaceous Plants and Shrubs ebook
