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Genus Gonia

Fly ID please - Gonia frontosa white-faced ringed fly - front - Gonia mating flies-what kind? - Gonia - male - female Fly - Gonia Fly - Gonia White headed fly - Gonia Tachinid  - Gonia Bentsen fly, front view - Gonia
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon (Calyptratae)
Superfamily Oestroidea
Family Tachinidae
Subfamily Exoristinae
Tribe Goniini
Genus Gonia
Explanation of Names
Author of genus is Meigen, 1803.
From Greek gonia angle. In vertebrate anatomy, gonion (plural gonia) is the angle of the jaw (Internet searches).
Numbers
27 species in North America listed in the PDF doc by O'Hara and Wood
Size
circa 11 mm (Gonia frontosa)
Life Cycle
Parasitoids of caterpillars, especially Noctuidae (UK Tachinids). Eggs are laid on the caterpillar food plant, and then ingested by the caterpillar (personal communication to user Cotinis, May 2008).
Internet References
taxonomic placement; PDF doc in subfamily Exoristinae, tribe Goniini, plus list of species and synonyms (James O'Hara and Monty Wood, Checklist of Tachinidae of America North of Mexico, 2004)
Stephen Creswell--Gonia frontosa--gives estimate of size