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Genus Allograpta

Syrphid Fly - Allograpta obliqua - female Common Oblique Syrphid - Allograpta obliqua - male Syrphid Fly - Allograpta exotica Syrphid fly - Allograpta obliqua Syrphid Fly - Allograpta obliqua - male Allograpta, Male? - Allograpta obliqua - male Hoverfly - Allograpta obliqua - female An infected Caterpillar on Milkweed? - Allograpta obliqua
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon ("Aschiza")
Family Syrphidae (Syrphid Flies)
Subfamily Syrphinae
Tribe Syrphini
Genus Allograpta
Explanation of Names
Allograpta Osten-Sacken 1875
Greek allos (αλλος) 'other, different' + graptos (γραπτος) 'painted, marked'
Numbers
3 spp. in our area(1)
Identification
fourth abdominal tergite with two pale oblique stripes in exotica and obliqua (see Fluke 1942: 24) (completely dark in Fazia micrura); male obliqua has pale crescent-shaped band on third abdominal tergite, whereas in female exotica the band is only slightly curved, and is flattened along its base

illustrates the katepisternum color difference between exotica and obliqua.
shows the yellow markings on tergite 2 (present in obliqua, absent in exotica).
Range
A. exotica NC-OR to Argentina (introduced to HI)
A. obliqua QC-WA south to Argentina (introduced to HI)
A. radiata FL + West Indies (introduced to HI)
Food
larvae prey on aphids, but some exotic spp. are herbivorous
See Also
Print References
Molecular phylogeny (Mengual et al. 2008)
Internet References
http://www.mapress.com/zootaxa/2009/f/zt02214p028.pdf. Zootaxa
Works Cited
1.Key to the genera of nearctic Syrphidae
Miranda G.F.G, Young A.D., Locke M.M., Marshall S.A., Skevington J.H., Thompson F.C. 2013. Can. J. Arthropod Identification 23: 1-351.