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Species Rhagoletis completa - Walnut Husk Fly

Walnut Husk Fly? - Rhagoletis completa Fly - Rhagoletis completa Fruit Fly - Rhagoletis completa Walnut Husk Fly - Rhagoletis completa Walnut Husk Fly - Rhagoletis completa - female Walnut Husk Fly - Rhagoletis completa - female Walnut Husk Fly? - Rhagoletis completa Walnut Husk Fly? - Rhagoletis completa
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon ("Acalyptratae")
Superfamily Tephritoidea
Family Tephritidae (Fruit Flies)
Subfamily Trypetinae
Tribe Carpomyini
Subtribe Carpomyina
Genus Rhagoletis
Species completa (Walnut Husk Fly)
Size
Adult 6 mm, fully grown larva 13 mm
Identification
Yellow spot just below the areas where the wings are attached; iridescent, greenish eyes; wings with three prominent dark bands. Female larger than male and with pointy abdomen.
Range
native to NA, originated east of the Rocky Mountains, then spread elsewhere (first seen in CA in 1926, in Europe in the 1980s --widely spread since)(1)
Food
Walnut husks primarily. It can attack other plants, such as peaches.
Life Cycle
One generation a year. Overwinters as pupa. Peak emergence mid July to mid August.
Remarks
Damages walnuts, serious pest of walnut orchards
Internet References
Fact sheets by C. Pickel, H. Riedl
Works Cited
1.Alien terrestrial arthropods of Europe
Roques A., Kenis M., Lees D., Lopez-Vaamonde C., Rabitsch W., Rasplus J.-Y., Roy D., eds. 2010. BioRisk 4 Special Issue; 2 vols., 1028 pp.