The illustrations & photos in this book are excellent. There are small bullet point comments pointing to various identifying features that don't talk down to the amateur naturalist. The descriptions of the various insects and critters in the book are similarly intelligent.
For example, on p. 93, the following on 'Assassin Bugs': "These bugs get their name from being highly predacious. They vary from being stout bodied to very elongate with threadlike legs. Most species are dark colored, but some may have bright markings. The head has a short, curved, three segmented rostrum. The front legs are strong and shorter than the others - ideal for gripping prey."
The photos are large enough that one can readily identify those individuals listed in the book. BUT, and this is a big but, because the book covers all insects, spiders "...and other terrestrial arthropods", all over the planet, this is not a specific bug identification book. There are simply too many differences between insects in Africa, North America, Europe, etc... Instead, this is book is great at identifying TYPES of insects. A great overview of the topic, but if you want a greater degree of specificity, go to the Audubon field guides.