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Mystery Cheilosia 2

 
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Sandy



Joined: 22 Jul 2008
Posts: 135
Location: East Lothian

PostPosted: Mon Apr 19, 2010 9:03 am    Post subject: Mystery Cheilosia 2 Reply with quote

Cheilosia 2

Description for Pagana group "Eyes bare, legs partly yellow, face without erect hairs" seems to fit.
The large orange antennae suggest pagana or soror.
Difficult to tell if the aristae are "densely pubescent at base" or bare from this photo so can't take this any further.
Again I welcome any comments.

Sandy
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brianh



Joined: 23 Oct 2008
Posts: 150

PostPosted: Mon Apr 19, 2010 3:27 pm    Post subject: Reply with quote

It is probably C. pagana. At the moment I have been capturing quite a few.

From a picture you will not be able to see if the eyes are hairy ( for the similar C. bergenstammi), or whether there is pubescence at the base of the arista (C. soror). Both of these species are usually seen a little later.

Even with a microscope I have to look carefully at eyes and arista as it is only with the right light and background that it is obvious.
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Sandy



Joined: 22 Jul 2008
Posts: 135
Location: East Lothian

PostPosted: Tue Apr 20, 2010 5:56 pm    Post subject: Reply with quote

Thanks Brian

After reading some more literature it seems soror doesn't fly until june so it's more than likely C. pagana.

Cheers,
Sandy
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