Starting with the inevitable prologue and always ending with the survival of a few hardy specimens (just in case sales justify a sequel), these books have much in common. They take place almost exclusively during the hottest day/week/month of the year after radiation/evolution/untested insecticide causes fauna to mutate. Insect-attack books are basically morality tales in which unscrupulous developers, ethics-free businessmen, and ineffectual local leaders find their scale-balancing comeuppances between chitinous mandibles.