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This is a supplement to my earlier review. Note that the description of American Insects, by Arnett,... is based on the first edition, in which "Every order, family, and genus is conveniently numbered and indexed" and you could "quickly determine the taxonomic position of any species, genus, or higher taxon of insect known to occur in America and Canada." This is not the case in the second edition. You can look up major genera only.
Subfamilies are listed under an entry for the family, not under the subfamily name, which means you _can't_ quickly determine their taxonomic positions. You have to know the taxonomic position in order to look up the subfamilies. This defeats one major purpose of the book, and renders it not very usable.
Whoever provided the text for the book description apparently just carried it over from the previous edition, without taking into account the changes in the new edition. This isn't by a long stretch the same book.
2 Once excellent book devalued
As a naturalist and amateur entomologist, I found the first edition of this book especially useful for looking up unfamiliar genera and species of insects, to find out where they fit in the scheme of insect taxonomy.
Unfortunately, CRC Press, the publisher of the second edition, has cut corners by reducing the size of the index from 128 pages for 714 pages of text in the first edition to 57 pages for 931 pages of text in the second edition. This was accomplished by eliminating all but the major genera from the index. In my opinion, this seriously diminishes the value of the book. The best information in the world is useless if you can't access it efficiently. A book like this lives or dies by the quality of its index.
After purchasing the book in early January, 2001 and quickly discovering the problem, I wrote to the publisher to complain and to ask that they make available a complete index as a supplement. I have yet to receive a response from them. The book's author, Ross Arnett, was upset when the publisher of the first edition inadvertently left out the photo captions in proof and wouldn't restore them. I have to think he is spinning in his grave over the gutting of the index in the second edition, a much more serious affair.
I'd love to be able to recommend the second edition of this book. However, unless the publisher remedies the index problem, I can't. Unless you want it primarily for the keys, I suggest looking for a used copy of the first edition.