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 ID Syrphus ribesii?
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| Ocellar view |
Posted on 27-04-2017 10:55
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Member Location: Switzerland Posts: 145 Joined: 06.04.17 |
Found on 05 April 2017 in Switzerland, Kerzers (447 m) I suppose Syrphus ribesii. Is this plausible? Ocellar view attached the following image:  [112.11Kb] |
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| treebeard |
Posted on 27-04-2017 17:04
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Member Location: Slovakia Posts: 614 Joined: 13.08.13 |
I am afraid we can see not enough to be sure. I cannot guess whether the eyes are bare or hairy (if ribesii, they should be bare) and if the hind femora is prevalently yellow (the part we can see is yellow). |
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| Juergen Peters |
Posted on 27-04-2017 22:02
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 Member Location: northwest Germany Posts: 13910 Joined: 11.09.04 |
Hi, treebeard wrote: and if the hind femora is prevalently yellow isn't that decisive only for females? Best regards, Jürgen -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Juergen Peters Borgholzhausen, Germany WWW: http://insektenfo... -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= |
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| Ocellar view |
Posted on 28-04-2017 08:33
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Member Location: Switzerland Posts: 145 Joined: 06.04.17 |
treebeard wrote: I am afraid we can see not enough to be sure. Fortunately, I have collected the specimen and checked the following: - Basal 2/3 - 3/4 of hind femora are black which seems to be typical for S. ribesii males - Eyes are bare (rules out S. torvus) - Second basal cell is completely and evenly covered with microtrichia (rules out S. vitripennis) I think this should characterize it as S. ribesii. However due to a lack of trustworthy literature I am not quite sure. Best, Ov Edited by Ocellar view on 28-04-2017 08:34 |
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