Ants that commonly invade homes, damage structures, inflict painful bites, or sting humans or their pets are considered pest ants. This illustrated identification guide highlights forty species of ants that pose difficulties in urban settings. Included are well-known invasive troublemakers such as the red imported fire ant and Argentine ant, as well as native species. After an introductory chapter on the evolution, biology, and ecology of pest ants, the book follows a taxonomic arrangement by subfamily. Each subfamily chapter includes separate illustrated keys to both the genera and species of that group to enable entomologists and pest control professionals to identify pest ants correctly. The species accounts cover biology, distribution, and methods for excluding and/or removing ants from human structures and landscapes. The authors focus on the ants' biology and nesting behavior, life cycles, and feeding preferences; an intimate understanding of these factors enables the implementation of the least toxic control methods available. A chapter on control principles and techniques encompasses chemical strategies, habitat and structural modifications, biological control, and integrated pest management methods. Urban Ants of North America and Europe also contains valuable information on the diagnosis and treatment of human reactions to ant stings and bites. This comprehensive reference work on these economically significant ants includes the scientific, English, French, Spanish, and German names for each species and a summary of invasive ant species in the United States and Europe.