This peer reviewed text includes a dichotomous key to all 16 genera of Mantodea found in the U.S. and Canada. Extremely detailed descriptions are provided for each of the 28 species found within this region. One newly listed invasive species is documented, raising the total number of introduced species to seven-25% of the region's Mantodea fauna. Updated species treatments include taxonomic illustrations, precise morphological descriptions, accurate morphometry, complete natural history documentation, exhaustive historical literature review, and detailed distribution range maps. There are 183 illustrations contained within the 297 pages of text, including 120 color photographs of live specimens.