About Triarthria setipennis (Fallén, 1810)
Triarthria setipennis (Fallén, 1810) is a species of tachinid fly that parasitizes other insects, including earwigs. In its native range, it is found in Albania, Andorra, Belarus, Austria, Belgium, Bulgaria, the Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Italy, Lithuania, Norway, Poland, Romania, Russia, Slovakia, Spain, Sweden, Switzerland, the Netherlands, Ukraine, and the United Kingdom. This species was intentionally introduced from Europe to North America in the 1920s to control Forficula auricularia, the European earwig, and has since become established in British Columbia, Newfoundland, Washington, Oregon, California, Idaho, Nevada, Utah, New Hampshire, and Massachusetts.
