Diptera.info :: Identification queries :: Diptera (adults)
 Help with fly ID ...
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| jezlee |
Posted on 20-07-2007 09:11
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 Member Location: West Midlands, UK Posts: 195 Joined: 12.06.06 |
Can anyone help on this one? Could it be Graphomya picta? Or is it G.maculata?
jezlee attached the following image:  [103.58Kb] Jez Lee www.uknature.co.uk |
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| Susan R Walter |
Posted on 20-07-2007 13:28
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 Member Location: Touraine du Sud, central France Posts: 1802 Joined: 14.01.06 |
Jez On the balance of probability, it will be G maculata, which is widespread and common in the UK. G minor (syn G picta) is uncommon and at very few sites - see Robert Nash's 1997 Northern Ireland Species Inventory (Muscidae and Fannidae) http://www.ehsni....muscid.pdf. The amount of black on the thorax in Graphomyia's seems very variable, and I don't really know what the diagnostic characters for the two species are. (Not really very helpful, I know, but hopefully someone will provide the answer for us both.) 
Susan |
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| jezlee |
Posted on 20-07-2007 15:23
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Member Location: West Midlands, UK Posts: 195 Joined: 12.06.06 |
Susan R Walter wrote: Jez On the balance of probability, it will be G maculata, which is widespread and common in the UK. G minor (syn G picta) is uncommon and at very few sites - see Robert Nash's 1997 Northern Ireland Species Inventory (Muscidae and Fannidae) http://www.ehsni....muscid.pdf. The amount of black on the thorax in Graphomyia's seems very variable, and I don't really know what the diagnostic characters for the two species are. (Not really very helpful, I know, but hopefully someone will provide the answer for us both.) I didn't really expect a definitive answer, Susan - I know how difficult they can be to identify from photographs! On the laws of probability, as you say, it will be G.maculata - there were plenty of these about last week when I took this photograph. Thanks again for your input! Jez 
Jez Lee www.uknature.co.uk |
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