Diptera, or true flies, are a widespread and beautiful group of insects. With over 150,000 described species and far more undescribed, Diptera include important pollinators, disease vectors, detritivores, and predators.

Field/Photo ID for Flies, commonly known as "the Fly Guide," is a collection of resources created by a variety of authors, compiled for identifying Diptera from photographs and specimens.

If you're looking to get your own photos identified, upload them to iNaturalist! Please make an effort to use our guides before tagging someone.