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Diptera.info :: Identification queries :: Diptera (adults)
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Male Anthomyiidae -> Strobilomyia sp.
Aiwok
#1 Print Post
Posted on 29-12-2016 17:00
Member

Location: Hamburg
Posts: 38
Joined: 07.03.11

Hi,
I found these black flies, which I once dropped in my Calythea nigricans directory. A closer look showed they are probably not Calythea. I removed already some Azelias from the batch but these guys attached here remain. I think they are Anthomyiidae indeed but I can't figure out which. I found them basking on leaves of some shrubbery. They are from Hamburg. The surroundings are parks, gardens and ruderal areas.
Best Regards,
Jan
First one from July 2013
www.naturalis-historia.de/bilder/DSC_5470.JPG
www.naturalis-historia.de/bilder/DSC_5476.JPG
Second from July 2015
www.naturalis-historia.de/bilder/DSC_1103.JPG
Edited by Aiwok on 31-12-2016 13:58
 
www.naturalis-historia.de
javanerkelens
#2 Print Post
Posted on 29-12-2016 19:58
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Location: Netherlands
Posts: 2962
Joined: 18.10.07

Calythea species have only one long posterior dorsal seta on the hindtibia, wing base not yellowish/brown and the abdomen with a more sharp separation in black and white pattern.

On your photos we can see three long pd on t3, wing base yellowish/brown and abdomen with more diffuse triangles on abdominal margins.

So I think this is Strobilomyia.
They (the larvae) attacks cones of larch species
In Europe there are 7 Strobilomyia species and mostly they only can be indentified by looking at the genitalia.

Johanna
 
Aiwok
#3 Print Post
Posted on 30-12-2016 18:38
Member

Location: Hamburg
Posts: 38
Joined: 07.03.11

Thanks a lot! I didn't know Strobilomyia at all. In fact I got stuck at Lasiomma in my latest approach identifying these guys - none of them fit. Apparently Strobilomyia was 'recruited' from some Lasiomma sp. and some new species.
Larix is indeed available in about 100m from the finding, Picea too but farther away (~500m). So I guess it's one of the Larix associated species. I found S. melania, S. laricicola and S. infrequens in some lists. Also S anthracina for Picea. S. svenssoni and S. siberica seem to be northern species? I don't remember any Abies close by for S. carbonaria.
Regards,
Jan
 
www.naturalis-historia.de
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