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Diptera.info :: Family forums :: Syrphidae
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Helophilus problem
Tony Irwin
#1 Print Post
Posted on 19-07-2008 09:09
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Location: Norwich, England
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 Caught on a saltmarsh in Norfolk, England 16 July 2008.
Female Helophilus species with female H.trivittatus (on left) for comparison.
Any suggestions?
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Edited by Tony Irwin on 19-07-2008 09:09
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Tony Irwin
#2 Print Post
Posted on 19-07-2008 09:10
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 another dorsal view
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Tony Irwin
#3 Print Post
Posted on 19-07-2008 09:11
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 and lateral
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Tony Irwin
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Posted on 19-07-2008 09:12
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 and face (trivittatus on left)
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Stephane Lebrun
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Posted on 19-07-2008 10:13
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 Hello Tony, your specimen has hind margin of tergites black, so I can suggest you a female of Hellophilus affinis. Fore tarsi should be darkened only on dorsal surface. Other characters seems to correct for me.
Stephane.
 
Tony Irwin
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Posted on 19-07-2008 10:31
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 Thanks Stephane - I did wonder about affinis, but the fore tarsi are darkened below. Sad
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Stephane Lebrun
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Posted on 19-07-2008 11:06
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 I don't know how reliable is that character, but I can't see anything else matching with this one. The close H. groenlandicus is very improbable by having a black area of hair on scutum, well darker legs, sharper spots on T2...
Stephane.
 
Andre
#8 Print Post
Posted on 19-07-2008 16:50
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Location: Tilburg, the Netherlands
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 Why not a very dark hybridus? They do occur...
 
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If you have some spare money, there is a copy (together with keys to pupae and larvae) for sale by Hermann L. Strack, Loguivy Plougras, France

smol
23.06.25 11:18
Appreciate it, Tony Irwin! I got the hint to use the key next to Langton and Pinder key for females of Chironomidae. So no specific queries, except the keys... I will keep this on my list and hope th

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I have the hard copy book, if you have any specific queries, but I'm not scanning the 500+ pages!

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Anyone has "Chironomidae of the Holarctic region. Keys and diagnoses. Part 3. Adult Males Entomologica Scandinavica Supplement 34"? smolwaarneming@gma
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Nikita Vikhrev
28.05.25 20:57
I have Russian Coenosia. nikita6510@ya.ru

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28.05.25 12:25
Is someone able to share with me "A key to the Russian species of the genus Coenosia"?

Nikita Vikhrev
08.05.25 18:22
I have

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