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Species Rhagoletis completa - Walnut Husk Fly

Walnut Husk Fly? - Rhagoletis completa Fruit Fly - Rhagoletis completa Fruit Fly - Rhagoletis completa Tephritidae  - Rhagoletis completa # 12 - Rhagoletis completa Walnut Husk Flies - Rhagoletis completa - male - female Walnut Husk Fly? - Rhagoletis completa 2416 - Rhagoletis completa - male
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)
Adult 6 mm, fully grown larva 13 mm
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.
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)
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.
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.