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Photo#898528
Chrysotoxum, but which? C. ypsilon? - Chrysotoxum

Chrysotoxum, but which? C. ypsilon? - Chrysotoxum
Silverado Canyon, Orange County, California, USA
March 4, 2014

Images of this individual: tag all
Chrysotoxum, but which? C. ypsilon? - Chrysotoxum Chrysotoxum, but which? C. ypsilon? - Chrysotoxum Chrysotoxum, but which? C. ypsilon? - Chrysotoxum

Moved
Moved from Syrphid Flies.

I think this is C. laterale,
I think this is C. laterale, using Shannon's 1926 key (Vockeroth's 1992 key only covers the Canadian species). C. ypsilon should have a wholly yellow abdominal margin, while this fly seems to have alternating yellow and black. Abdominal bands seem interrupted and the side of the thorax (specifically the pteropleura) looks black, so it's C. laterale or C. fasciolatum. The latter species is more northern and the antennal segment ratios seem to fit C. laterale a bit better anyways...

 
Thanks. I'll move it there, if you'll make a page.
Let's wait a couple days to see if anyone comments. Martin?

We're really scarce on IDed species here; it'd certainly be good to add some and that sounds do-able.

 
A revision of nearctic Chrysotoxum
by Jeff Skevington and Daniele Sommagio is still in the works. Jim Hogue and I have a number of specimens from a variety of locations that Jim will send to them for determination. Out of 23 Nearctic names there are 13 valid species and 2 new species (Skevington poster).
I'd wait 'til we have a reliable key that includes the beasties in our region.
Or you can safely move this to genus page.

 
Great - thank you so much! I
Great - thank you so much! I'll move it to genus so we know where to find it. Wonderful to hear.

 
Thanks, both.
.

 
That was my thought too - to
That was my thought too - to leave it for a week or so and then make the page and move it. I might be able to do some more IDs based on Shannon's key in the next few weeks so we can get the number of flies on the genus page to species!

 
Wonderful! Thanks again, Kelsey.
.

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