Daly's Introduction to Insect Biology and Diversity is respected for the balanced presentation and evolutionary perspective it brings to the study of entomology. This international third edition has been updated to contain the latest information on genetics, development, physiology, evolution, phylogeny, and systematics. The international third edition also witnesses a changing of the authorial guard as founding authors Daly and Doyen retire from the project. James Whitfield, of the University of Illinois, Urbana-Champaign, joins remaining-author Sandy Purcell as a new co-author, bringing a wealth of expertise on molecular analysis relating to development and systematics. In keeping with the changing nature of the entomology course, the text has been recrafted with both entomology majors as well as other interested undergraduates in mind. The revised text introduces key themes, such as evolution, applications to the real world, and new pedagogic tools, making the material even more relevant, interesting, and engaging. At the same time, the text maintains all its original strength as an authoritative source for the latest discoveries from the lab by thoroughly updating key topics and illustrations. The revision's three-pronged approach-incorporation of thematic discussions, updating of core biological principles as well as the latest taxonomic advances, and making the material more accessible through pedagogical devices- truly make Introduction to Insect Biology and Diversity the most comprehensive and affordable entomology text available.