Diptera.info :: Identification queries :: Diptera (adults)
 ID Thereva
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| Patrick Le Mao |
Posted on 25-11-2013 20:27
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Member Location: Posts: 85 Joined: 08.10.12 |
Hello This Thereva was photographed in a little swamp on a sand dune near Saint-Brieuc (Brittany) on August 27th, 2013. It could be Thereva nobilitata, but I am not really sure of my identification... can you help me? Patrick Patrick Le Mao attached the following image:  [106.76Kb] |
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| Patrick Le Mao |
Posted on 25-11-2013 20:27
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Member Location: Posts: 85 Joined: 08.10.12 |
another picture
Patrick Le Mao attached the following image:  [109.37Kb] |
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| Ectemnius |
Posted on 27-11-2013 09:59
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Member Location: The Netherlands Posts: 865 Joined: 22.11.11 |
Hello Patrick, Your ID is correct. Although this is a atypical specimen. The marking on the frons is not shaped like an old rayban pilot sun glass. Also its straight and touches the eyes over a considerable distance. That could point in the direction of T. valida. But that species has less dusting on the front of the abdominal tergites and has a more greyish habitus. Still, identification of Thereva off a photo is usually very difficult. Greetings, Ectenius |
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| libor |
Posted on 27-11-2013 10:32
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Member Location: western Bohemia Posts: 1290 Joined: 30.05.09 |
Ectemnius, my first impression from the picture was absolutely the same as yours: strange nobilitata. Remark to your last sentence: identification of Thereva under microscope is also difficult ;-) |
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| Ectemnius |
Posted on 27-11-2013 11:22
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Member Location: The Netherlands Posts: 865 Joined: 22.11.11 |
Hah! You are absolutely right libor!  |
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| Patrick Le Mao |
Posted on 27-11-2013 17:31
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Member Location: Posts: 85 Joined: 08.10.12 |
Thank you very much... I know that Thereva is very difficult to identify, so I'm very pleased with your answers |
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