Diptera.info :: Family forums :: Syrphidae
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| pat_der2003 |
Posted on 07-09-2007 18:53
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Member Location: Paris area, France Posts: 1731 Joined: 20.08.07 |
is it possible to call those Syrphidae "Eristalis arbustorum" or they are only Eristalis sp ? loire-atlantique, France, july 30 2007. pat_der2003 attached the following image:  [42.42Kb] |
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| pat_der2003 |
Posted on 07-09-2007 18:54
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Member Location: Paris area, France Posts: 1731 Joined: 20.08.07 |
the female :
pat_der2003 attached the following image:  [79.02Kb] |
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| conopid |
Posted on 08-09-2007 15:45
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 Member Location: United Kingdom Posts: 1039 Joined: 02.07.04 |
Probably E arbustorum - the face does not appear to have a dark stripe down its centre.
Edited by conopid on 08-09-2007 15:45 Nigel Jones, Shrewsbury, United Kingdom |
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| pat_der2003 |
Posted on 10-09-2007 09:09
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Member Location: Paris area, France Posts: 1731 Joined: 20.08.07 |
Thank you !! ;-) |
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| Menno Reemer |
Posted on 10-09-2007 09:44
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Member Location: Posts: 343 Joined: 10.06.04 |
I'm afraid I have to disagree. The very small pterostigma indicates that it is E. nemorum (= interrupta). And in males E. arbustorum the 3rd tergite usually has larger yellow markings. Besides, this behaviour is typical for Eristalis nemorum. E. arbustorum doesn't do things like this. |
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| conopid |
Posted on 10-09-2007 22:25
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Member Location: United Kingdom Posts: 1039 Joined: 02.07.04 |
I think you may be right, as the stigma does appear to be sharply defined. However I find that the orange markings vary considerably in both species. I am sure that I have seen E arbustorum exhibitng this behaviour, or perhaps I should be making a much closer inspection of courting pairs (or triples)? What have others found? Nigel Jones, Shrewsbury, United Kingdom |
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| pat_der2003 |
Posted on 15-09-2007 14:00
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Member Location: Paris area, France Posts: 1731 Joined: 20.08.07 |
here is a triples ... (but i can't say if it is the same species !) thanks to both of you ! 
pat_der2003 attached the following image:  [44.13Kb] |
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| conopid |
Posted on 15-09-2007 18:48
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Member Location: United Kingdom Posts: 1039 Joined: 02.07.04 |
Oh lovely shot and the facial stripe is clear, so that is E interruptus.
Nigel Jones, Shrewsbury, United Kingdom |
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| pat_der2003 |
Posted on 17-09-2007 09:29
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Member Location: Paris area, France Posts: 1731 Joined: 20.08.07 |
thank you !  |
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