Dust by Charles Pellegrino
From the blurb:
"In an idyllic Long Island community, paleobiologist Richard Sinclair is one of the first to suspect that the environment has begun to wage bloody, terrifying war on humanity. What initially appear to be random, unrelated events are actually violent eruptions in a worldwide biological chain reaction. Along with a brave group of survivors, Sinclair must learn to understand the catastrophe while it roils around them, slowly crumbling a panicked world and threatening apocalypse. The survival of humankind depends on finding an answer immediately--or else they will face the final, tragic destiny of their species. "
This book may not be the best writing on the planet, but it does take a fairly accurate look at what could happen should all the insects disappear - the collapse of ecosystems, food crops, the economy, society and ultimately civilization. The book is rather interesting, scary and thought provoking. The author doesn't provide all the answers and the reader needs to pay attention. It does not have zombies (!!) despite the prions. It does have some unusual voracious critters. Most of the science discussed in this book is accurate, which is what makes this book so fascinating (to me anyway).