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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Flies (Diptera) » "Acalyptratae" » Tephritoidea » Signal Flies (Platystomatidae) » Rivellia » colei and quadrifasciata (Rivellia colei and quadrifasciata) » Soybean Nodule Fly (Rivellia quadrifasciata)
Photo#287980
Signal Flies - Rivellia quadrifasciata - male - female
Copyright © 2009 John Pearson

Signal Flies - Rivellia quadrifasciata - Male Female
Swamp White Oak Preserve, Nichols, Muscatine County, Iowa, USA
June 13, 2009
Size: ~5 mm (female)
These flies were mating on a milkweek leaf in a grassy bottomland field. Male is the smaller one behind the larger female. Syrphid flies?

Images of this individual: tag all
Signal Flies - Rivellia quadrifasciata - male - female Signal Flies - Rivellia quadrifasciata - male - female Signal Flies - Rivellia quadrifasciata - male - female
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Contributed by John Pearson on 13 June, 2009 - 9:49pm
Last updated 8 January, 2016 - 8:48pm

So an interesting picture! Ma
So an interesting picture! Maybe I miss interpret it, but it seems to me that we notice (I'm not sure how to say it as it is probably a familly friendly site, but) the "excitation" of the male :) So harder to take in picture than the copulation itself (at least it is the first time I see it and I'm a habitue of entomological picture sites).
… Pierre-Marc Brousseau, 8 January, 2016 - 10:25pm login or register to post comments

Moved
Moved from colei and quadrifasciata.
… John F. Carr, 8 January, 2016 - 8:48pm login or register to post comments

Moved
Moved from Rivellia. An expert might recognize the male from his sexual organ.
… John F. Carr, 30 November, 2011 - 6:24pm login or register to post comments

Syrphid or not?
Often, an easy way to tell is that the presence of the spurious vein denotes a syrphid. See:

(A spurious vein is one that's going nowhere.)
… Ron Hemberger, 14 June, 2009 - 12:45pm login or register to post comments

Please see...
Rivellia

… Ron M., 13 June, 2009 - 10:28pm login or register to post comments

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