Catharosia pygmaea is a species of bristle fly in the family Tachinidae.
British Isles, Czech Republic, Estonia, Hungary, Lithuania, Poland, Romania, Ukraine, Denmark, Finland, Norway, Sweden, Andorra, Bulgaria, Croatia, Greece, Italy, Malta, Portugal, Slovenia, Spain, Turkey, Austria, Belgium, France, Germany, Netherlands, Switzerland, Iran, Israel, Palestine, Mongolia, Russia, Transcaucasia.