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Home » Guide » Arthropods (Arthropoda) » Insects (Insecta) » Flies (Diptera) » Aschiza » Syrphid Flies (Syrphidae) » Syrphinae » Toxomerini » Toxomerus » Toxomerus marginatus
Photo#130988
Flower Fly - Toxomerus marginatus - male - female
Copyright © 2007 Bill Claff

Flower Fly - Toxomerus marginatus - Male Female
Wellesley, Norfolk County, Massachusetts, USA
June 24, 2007
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Contributed by Bill Claff on 26 July, 2007 - 4:20pm
Last updated 26 July, 2007 - 7:41pm

Toxomerus
Likely T. marginatus. (Also check T. geminatus, though.)
… Ron Hemberger, 26 July, 2007 - 7:35pm login or register to post comments

 
Is the difference in eye color
related to sex or just a coincidence?
… Bill Claff, 26 July, 2007 - 7:43pm login or register to post comments

 
Yes
If I'd look more closely, even at my own images , I would have seen that.
… Bill Claff, 26 July, 2007 - 7:42pm login or register to post comments

 
You have a sharp eye!
I didn't notice a color difference. BTW, with many syrphids, size and configuration of eyes indicate gender. Male eyes typically touch at the top, while female's are separated. Male eyes are also generally larger, so the female has a larger "face", i.e. white area in this case. (You can figure out stuff like this for flies by looking at photos of mating pairs. Bet you'll have a knack for it.)
… Ron Hemberger, 26 July, 2007 - 8:51pm login or register to post comments

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