Gonia picea is a Palaearctic species of fly in the family Tachinidae. Range Europe, Mongolia, China, Taiwan, Japan, Central Asia, Russia (West Russia & Western & Eastern Siberia), Caucasus. Hosts The larvae of Cerapteryx graminis, Xestia xanthographa, Staurophora celsia, Mamestra brassicae, Mythimna comma & Polygonia c-album. References Diptera of Europe Diptera of Asia Insects described in 1830 Exoristinae