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colei and quadrifasciata

Signal Fly - Rivellia - female Signal Flies - Rivellia quadrifasciata - male - female Rivellia colei or quadrifasciata - Rivellia Soybean nodule fly - Rivellia - male - female Genus  Rivellia - Rivellia Rivellia colei and quadrifasciata? - Rivellia - female Rivellia colei and quadrifasciata? - Rivellia - female Rivellia colei - male
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon ("Acalyptratae")
Superfamily Tephritoidea
Family Platystomatidae (Signal Flies)
Genus Rivellia
No Taxon colei and quadrifasciata
Other Common Names
ITIS lists quadrifasciata as "soybean nodule fly"
Range
Rocky Mountains to Atlantic
Remarks
The two species can only be separated by dissecting males. R. quadrifasciata is the more common and widespread species.