Thelaira leucozona

Thelaira leucozona is a species of fly in the family Tachinidae first described by Georg Wolfgang Franz Panzer in 1806. It parasitizes moths such as Arctia caja by laying eggs in the larvae that eventually kill the host.

Distribution
Great Britain, Czech Republic, Hungary, Latvia, Poland, Bulgaria, Italy, Serbia, Austria, France, Germany, Switzerland, Japan, Russia, Transcaucasia, China.