Diptera.info :: Identification queries :: Diptera (adults)
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 Anthomyiidae.
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| Pentti Ketola |
Posted on 19-05-2013 11:47
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Member Location: Posts: 5032 Joined: 04.02.10 |
Hi, Can anybody help with determination of this fly species? I take the photo on 19 May 2013 Kokkola, Finland. Regards Pentti. Pentti Ketola attached the following image:  [62.75Kb] Edited by Pentti Ketola on 19-05-2013 18:22 |
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| javanerkelens |
Posted on 19-05-2013 18:02
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 Member Location: Netherlands Posts: 2962 Joined: 18.10.07 |
Anthomyiidae. Please can you show the chaetotaxy of all the legs (always very important in Anthomyiidae!), .........and if possible a better view on the genitals. Johanna |
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| javanerkelens |
Posted on 19-05-2013 20:10
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Member Location: Netherlands Posts: 2962 Joined: 18.10.07 |
You showed a lateral and dorsal view, but we need a ventral view….. I show you also an overview of the legs chaetotaxy. Than I like to know how many pd, ad and av setae there are on the hindtibia and if the midtibia (beside the mostly normal ad and pd/pv setae), also has an av seta. Also I show you how to pin the fly (on the side), so you easely can pull out the genitals with a minute pin. javanerkelens attached the following image:  [69.54Kb] |
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| javanerkelens |
Posted on 19-05-2013 20:11
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Member Location: Netherlands Posts: 2962 Joined: 18.10.07 |
Example of a pinned fly
javanerkelens attached the following image:  [116.48Kb] Edited by javanerkelens on 19-05-2013 20:12 |
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| Pentti Ketola |
Posted on 19-05-2013 20:46
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Member Location: Posts: 5032 Joined: 04.02.10 |
Thank you very much for your help! Regards. |
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| javanerkelens |
Posted on 19-05-2013 21:36
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Member Location: Netherlands Posts: 2962 Joined: 18.10.07 |
I am thinking about Paregle audacula, but than we have to see if the midtibia has an av seta, notopleuron is haired, and if there is a short orbital seta. Johanna |
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| Michael Ackland |
Posted on 21-05-2013 12:25
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Member Location: Dorset UK Posts: 680 Joined: 23.02.08 |
I agree with everything Johanna says. It is a tantalising antho fly, because the 6th tergite appears to be setulose, an unusual character. Finland has many rare and new species. The only way to get an ID is to run it down under the microscope, or dissect the end of the abdomen and examine the genitalia. If you can do this and make a photo of the genitalia and 5th sternite, I may be able to suggest a name? |
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| Pentti Ketola |
Posted on 21-05-2013 13:32
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Member Location: Posts: 5032 Joined: 04.02.10 |
Unfortunately I failed to carry out the procedure you described and ruined the fly in the process. So I can't provide more pictures, sorry. |
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| javanerkelens |
Posted on 21-05-2013 22:50
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Member Location: Netherlands Posts: 2962 Joined: 18.10.07 |
With already pinned flies, you have to soften them first to change pins, otherwise they fall apart and the legs are laying everywhere, where you don't want them. (on the ground, into the carpet, etc...) If you are serious interested for some procedures, you always can send me an PM. Johanna |
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| Michael Ackland |
Posted on 22-05-2013 09:57
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Member Location: Dorset UK Posts: 680 Joined: 23.02.08 |
I don't understand why you wanted to change pins with a dry specimen. Any attempt to hydrate the dried fly in water vapour (damp paper in jar) will generally end in failure. You would not have been able to pull out the genitalia, as in Johanna's photo, with a relaxed fly, only possible with a freshly killed one. All you needed to do was to break off the apical half of the abdomen with a pair of fine forceps (easy to do without damaging the specimen, do it under the microscope with a dish of alcohol underneath to catch the apical bit. Then soak it in sodium hydroxide (10%) for a few hours or days. Then you can dissect the postabdomen under the microscope Save it in glycerine after washing in water. Better still send it to me or Johanna in a small plastic vial before you dissect it |
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