Diptera.info :: Identification queries :: Diptera (adults)
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 the day of Ptychopteridae
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| guenille |
Posted on 10-11-2007 17:49
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 Member Location: France Posts: 714 Joined: 22.06.07 |
As unknow as Anthomyiidae I think but more beautiful. Sorry for bad picture but they are not so common Can you say more than Ptychoptera ? Thanks for help edith near paris, june 16th, ~15mm guenille attached the following image:  [100.98Kb] |
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| Louis Boumans |
Posted on 11-11-2007 20:53
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Member Location: NO Oslo Posts: 262 Joined: 09.06.04 |
Are you also a fan of John Wyndham's famous book?! (The Day of the Triffids) Anyway, two species of Ptychopteridae are common, P. albimana and P. contaminata, and I think this one is neither. So, interesting. I have a key of the British species by Stubbs, but I don't have time right now to study the key. |
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| Sundew |
Posted on 11-11-2007 23:33
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 Member Location: Berlin and Baden-Württemberg, Germany Posts: 3916 Joined: 28.07.07 |
To me, this seems to be a tipulid with the name Dictenidia bimaculata. Regards, Sundew |
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| Jan Willem |
Posted on 12-11-2007 08:06
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 Member Location: Waalwijk, The Netherlands Posts: 2137 Joined: 24.07.04 |
It seems to me that "Sundew" is completely right!
Jan Willem van Zuijlen |
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| Chen Young |
Posted on 12-11-2007 17:40
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 Member Location: Pittsburgh, PENNSYLVANIA USA Posts: 169 Joined: 25.08.05 |
The character to set this two groups apart lays in the number of anal veins. Tipulid has two anal veins while ptychopterid has only one anal vein. Here is a brief key for your info. |
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| guenille |
Posted on 12-11-2007 19:00
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Member Location: France Posts: 714 Joined: 22.06.07 |
Many many thanks Chen, too much difficult for me for this time but I will learn it when my english will be better. |
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| Louis Boumans |
Posted on 12-11-2007 21:40
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Member Location: NO Oslo Posts: 262 Joined: 09.06.04 |
Ah, you're right! I didn't even look at the anal veins, a good example of 'tunnel vision'. Of course Ptychopteridae and Tipulidae are also quite different in size, well generally speaking. |
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