Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Full title: Blow flies of North America: Keys to the subfamilies and genera of Calliphoridae, and to the species of the subfamilies Calliphorinae, Luciliinae and Chrysomyinae

The subfamilies, genera, and most frequently encountered species of North American Calliphoridae are reviewed, including a comprehensive pictorial key to the forensically important blow flies of North America. Distribution maps are provided for all species.
https://cjai.biologicalsurvey.ca/jwm_39/jwm_39.html