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Diptera.info » Family forums » Syrphidae
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Eristalis arbustorum
Susan R Walter
Can I have some reassurance please? I am reasonably confident that these two are male and female of Eristalis arbustorum, but would like someone to confirm it.

From 19 August 2006, east London cemetery park.

Female first.
Susan
 
http://loirenature.blogspot.com/
Susan R Walter
Female again. Face completely dusted except for tiny dot which I assume is just rubbed. Black tarsi, mid tibia black in apical half. 9mm.
Edited by Susan R Walter on 10-02-2007 15:38
Susan
 
http://loirenature.blogspot.com/
Susan R Walter
Male. 10mm. Much hairier than female on abdomen.
Susan
 
http://loirenature.blogspot.com/
Andre
Sure looks like arbustorum. But to exclude abusivus:
can you give us a close look on the antennae of both sexes and the upper side of the head of the male?
 
www.biomongol.org
Susan R Walter
OK will do - what are we looking for?
Susan
 
http://loirenature.blogspot.com/
Susan R Walter
Close up of female
Edited by Susan R Walter on 24-02-2007 17:03
Susan
 
http://loirenature.blogspot.com/
Susan R Walter
Another close up of female.
Susan
 
http://loirenature.blogspot.com/
Susan R Walter
And another close up of the female
Susan
 
http://loirenature.blogspot.com/
Susan R Walter
And a close up of the male
Susan
 
http://loirenature.blogspot.com/
Susan R Walter
Another close up of the male
Susan
 
http://loirenature.blogspot.com/
Susan R Walter
And another close up of the male
Susan
 
http://loirenature.blogspot.com/
Susan R Walter
This is a different female, collected a month earlier on 22 July 2006, in the same east London cemetery park. I see that Stubbs says that the easiest way to distinguish E arbustorum and E abusivus is to check that the mid tibia is clearly bicolour (arbustorum) and not entirely pale (abusivus). Is this character reliable?
Susan
 
http://loirenature.blogspot.com/
Susan R Walter
Second female again
Susan
 
http://loirenature.blogspot.com/
Susan R Walter
Second female again
Susan
 
http://loirenature.blogspot.com/
Susan R Walter
Second female again.
Susan
 
http://loirenature.blogspot.com/
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