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Diptera.info :: Family forums :: Syrphidae
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Love parade !
pat_der2003
#1 Print Post
Posted on 07-09-2007 17:53
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Location: Paris area, France
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 is it possible to call those Syrphidae "Eristalis arbustorum" or they are only Eristalis sp ?

loire-atlantique, France, july 30 2007.
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pat_der2003
#2 Print Post
Posted on 07-09-2007 17:54
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 the female :
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conopid
#3 Print Post
Posted on 08-09-2007 14:45
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 Probably E arbustorum - the face does not appear to have a dark stripe down its centre.
Edited by conopid on 08-09-2007 14:45
Nigel Jones, Shrewsbury, United Kingdom
 
pat_der2003
#4 Print Post
Posted on 10-09-2007 08:09
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 Thank you !! ;-)
 
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Menno Reemer
#5 Print Post
Posted on 10-09-2007 08:44
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 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.
 
conopid
#6 Print Post
Posted on 10-09-2007 21:25
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 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
 
pat_der2003
#7 Print Post
Posted on 15-09-2007 13:00
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 here is a triples ... (but i can't say if it is the same species !)

thanks to both of you ! Wink
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conopid
#8 Print Post
Posted on 15-09-2007 17:48
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 Oh lovely shot and the facial stripe is clear, so that is E interruptus.Grin
Nigel Jones, Shrewsbury, United Kingdom
 
pat_der2003
#9 Print Post
Posted on 17-09-2007 08:29
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 thank you ! Smile
 
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