More than one fifth of all known life forms on this planet are beetles. They are extraordinarily visually diverse: renowned British geneticist JBS Haldane, when asked what could be inferred about God from a study of His works, replied, An inordinate fondness for beetles. The Book of Beetles uncovers 600 significant examples, selected as part of a genome program. They are shown in glorious photographs, life size and in detail, alongside an engraving offering a side or open-winged view. Each profile includes a population distribution map, a table of essential information, and a commentary revealing notable characteristics, related species, and a diagnosis of the specimen's importance in terms of taxonomy, rarity, behaviour, and scientific significance. Arranged taxonomically, this essential reference reveals the variety and importance of beetles for the first time.