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Syrphidae to identify, please... - Epistrophe grossulariae - male

Syrphidae to identify, please... - Epistrophe grossulariae - Male
East Angus, Quebec, Canada
July 16, 2007
Here is a Syrphidae photographied last July 16th at East Angus, Quebec (near Vermont)
Is it possible to identify the genus/species???
Thank you very much in advance :-)

Moved from Epistrophe.

Black antennae key out to Epi
Black antennae key out to Epistrophe grossulariae in Vockeroth's 1992 key, though I'm not sure what Gerard thinks of this one (and would defer to him if he's around!).

Good work, per your norm.

Moved from Syrphini.

It is
In the tribus Syrphini, and I think this is indeed a male, in the genus Epistrophe!
So, male Epistrophe sp. would be my idea!

Epistrophe sp. seconded
Note the color and mottled look to the lighter stripes.

Hello Ron, I thought it wa
Hello Ron,

I thought it was Parasyrphus nigritarsis...

Any comments?

Thank you,


I'm not familiar with Parasyrphus nigritarsis
and there's not much on the net. I did find one similar to your other post.

Unlike the fly under discussion here, both had a dull color in the yellow bands, which are also shaped differently. Wish I could tell you more.

Hello Ron,Ironically this
Hello Ron,

Ironically this one is another picture I took ;-)

I finally identify the latter as Syrphus vitripennis.

Here, the abdomen form, the pattern on it, the greenish color of the thorax and the femur of the last pair of legs being 3/4 black are caracteristic of this species.



I did know that was your photo, Michel
There, you'd questioned if it was Parasyrphus nigritarsis. Above, I was trying to communicate that I'd found someone else's P. nigritarsis and that it looked like the fly you'd questioned.

It'd be good for you to update that post. Syrphus vitripennis is a new species for Bug Guide, in a genus with very few insects IDed to species.

Thank you very Jon and Gerard
Thank you very Jon and Gerard for your nice help...

Can I know what directs you toward the genus (Epistrophe)?

Thank you in advance,


That is really not so easy to explain.
Most of all it´s the jizz, like it´s general shape, color, shape of the bands on the abdomen, short antennae, shape of the head etc. That leads to Syrphini immediatly.
After that you look at the straight abdomen (most genera in Syrphini are more rounded), the shiny thorax and the bands, and you´ll end up with some kind of Epistrophe!
But it´s more difficult as one would think!

Thank you very much Gerard fo
Thank you very much Gerard for the good explanations!

It will then be Epistrophe sp. :-)



Looks like
a male but I'm not sure which direction to point you. I don't think it's Toxomerus.

Hello all, I finally think
Hello all,

I finally think it is Parasyrphus nigritarsis...

Any comments?



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