http://webdoc.sub.gwdg.de/diss/2006/bourger/bourger.pdf-Datei

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What Good Are Bugs? - Gilbert WALDBAUER - Google Books

https://books.google.de/books?id=C2r1fKXZBowC&pg=PA19#v=onepage

We shriek about them, slap and spray them, and generally think of insects (when we think of them at all) as pests. Yet, if all insects, or even a critical few, were to disappear--if there were none to pollinate plants, serve as food for other animals,…