Diptera.info :: Identification queries :: Diptera (adults)
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 Tachinidae, Triarthria
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| Ralph Sipple |
Posted on 13-07-2008 13:56
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Member Location: Ehingen (Danube), Germany Posts: 95 Joined: 21.07.07 |
Hello forum, this tachinid I found sitting on reed-grass in a moist grey-dune-habitat. Keywork led me to Triarthria sp. though I wasn`t sure with humeral-bristles. Could this be correct? Location: Darss-peninsula, Baltic Sea, Germany Date: 25.06.2008 Length: 5,1mm Regards Ralph P.S: @Andre: This time I used the Camera directly without the binocular. In case of bigger-sized objects, this could be the better way. Ralph Sipple attached the following image:  [71.35Kb] Edited by Ralph Sipple on 15-07-2008 05:00 Ralph |
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| ChrisR |
Posted on 14-07-2008 00:28
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 Administrator Location: Reading, England Posts: 7699 Joined: 12.07.04 |
The size is about right - but I'd need to see the face very clearly to check the parafacial for a line of bristles  What was the problem with the humeral bristles? |
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| Ralph Sipple |
Posted on 14-07-2008 18:51
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Member Location: Ehingen (Danube), Germany Posts: 95 Joined: 21.07.07 |
Hello Chris, In Tschorsnig & Herting`s tachinid-key you have to decide: - two humeral bristles (or three in a straight line) >>> Triarthria (and others) or - four humeral bristles, the strongest of them form a triangle >>> Pseudopachystylum, Zophomyia In this case I (believe to) see the triangle (1,2,3) but all other characteristics lead me to Triarthria. Ralph Sipple attached the following image:  [111.65Kb] Ralph |
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| Ralph Sipple |
Posted on 14-07-2008 18:54
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Member Location: Ehingen (Danube), Germany Posts: 95 Joined: 21.07.07 |
sorry for bad image-quality ! Ralph Ralph Sipple attached the following image:  [88.66Kb] Ralph |
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| ChrisR |
Posted on 14-07-2008 22:01
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Administrator Location: Reading, England Posts: 7699 Joined: 12.07.04 |
The face looks quite like Triarthria (with all those bristles) so I think you are on the right track. Your 3rd "humeral bristle" is actually one of the notopleurals - I think you can just see the 3rd humeral bristle in a line with the 1st and 2nd |
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| Ralph Sipple |
Posted on 15-07-2008 04:58
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Member Location: Ehingen (Danube), Germany Posts: 95 Joined: 21.07.07 |
Many thanks, Chris. Then it could be T. setipennis, the only species of this genus in Germany.
Ralph |
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