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 Syrphidae ?
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| Robert Heemskerk |
Posted on 17-05-2007 22:48
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 Member Location: Posts: 2082 Joined: 17.10.05 |
Hello Flyforum, Today I found this 'strange' fly in low(wet) vegetation in the Amsterdam Forest. I though it was Syrphidae sp. and perhabs Cheilosia? But what kind of Cheilosia? and is it Syrphidae indeed? size ~10-15mm colour of thorax blue-green metalic shiny Cheilosia Variabilis ? I am wondering what it is 
Edited by Robert Heemskerk on 17-05-2007 23:06 |
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| Dieter |
Posted on 17-05-2007 23:41
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Member Location: Posts: 114 Joined: 15.04.07 |
Hi, Cheilosia albitarsis (probably) or ranunculi. Regrads, Dieter |
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| Robert Heemskerk |
Posted on 18-05-2007 21:56
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Member Location: Posts: 2082 Joined: 17.10.05 |
Thank you for your comment Dieter, I think you are right and it is Cheilosia albitarsis. When I have a close look to the first leg (tarsus II, III and IV) then you can see that the colour is yellow-white. Must be Cheilosia albitarsis I think? Edited by Robert Heemskerk on 18-05-2007 21:57 |
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| Dieter |
Posted on 18-05-2007 23:15
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Member Location: Posts: 114 Joined: 15.04.07 |
Hi, this character is important for ID of the species group that contains albitarsis and ranunculi. These taxa have a different shape of the last tarsomere of the fore leg. Unfortunately, this is not quite clear on the foto but it seems it is albitarsis. A fully reliable ID requires to check the genitalia. Regards, Dieter |
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