Diptera.info :: Identification queries :: Diptera (adults)
 Drosophilidae: Stegana (Steganina) mehadiae; female
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| helge |
Posted on 30-08-2021 08:34
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Member Location: Austria Posts: 1322 Joined: 10.02.16 |
Austria, June. Thank you for your help! Helge helge attached the following image:  [276.15Kb] Edited by helge on 30-08-2021 14:55 |
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| helge |
Posted on 30-08-2021 08:34
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Member Location: Austria Posts: 1322 Joined: 10.02.16 |
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helge attached the following image:  [287.91Kb] |
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| helge |
Posted on 30-08-2021 08:35
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Member Location: Austria Posts: 1322 Joined: 10.02.16 |
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helge attached the following image:  [262.53Kb] |
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| Jan Willem |
Posted on 30-08-2021 10:49
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 Member Location: Waalwijk, The Netherlands Posts: 2161 Joined: 24.07.04 |
Looks like Drosophilidae: Stegana spec.
Jan Willem van Zuijlen |
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| Jan Willem |
Posted on 30-08-2021 10:53
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Member Location: Waalwijk, The Netherlands Posts: 2161 Joined: 24.07.04 |
Jan Maca may be able to help.
Jan Willem van Zuijlen |
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| Jan Maca |
Posted on 30-08-2021 12:18
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Member Location: Posts: 1280 Joined: 25.03.10 |
I would stay at the (sub-) generic determination, If it is a large fly (some 5 to 6 mm), then it should be S mehadiae, but it seems me to belong to the cluster of smaller species.
Edited by Jan Maca on 30-08-2021 12:19 |
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| Jan Willem |
Posted on 30-08-2021 12:28
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Member Location: Waalwijk, The Netherlands Posts: 2161 Joined: 24.07.04 |
Thank you for the quick response Jan! Maybe Helge can give some additional info on the measurements. Jan Willem van Zuijlen |
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| helge |
Posted on 30-08-2021 13:51
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Member Location: Austria Posts: 1322 Joined: 10.02.16 |
Thank you very much Jan & Jan! I found a second specimen preserved in alcohol, same spot, same time. Both flies are about 5 mm (see additional photos). I just looked up the key of Bächli & Burla 1985 and it keys out Steganina (?) nigrithorax. S. mehadiae is not listed for Switzerland; but I do not know if it could occour in Austria. What do you think? Helge helge attached the following image:  [279.42Kb] Edited by helge on 30-08-2021 13:53 |
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| helge |
Posted on 30-08-2021 13:54
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Member Location: Austria Posts: 1322 Joined: 10.02.16 |
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helge attached the following image:  [196.47Kb] |
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| helge |
Posted on 30-08-2021 13:54
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Member Location: Austria Posts: 1322 Joined: 10.02.16 |
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helge attached the following image:  [223.02Kb] |
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| Jan Maca |
Posted on 30-08-2021 14:46
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Member Location: Posts: 1280 Joined: 25.03.10 |
Good job! Wide gena and numerous lines of acrostichals, as well as the size of flies, show that it is S. mehadiae. I had seen two flies of this species in the old collection of Museum Vienna, with locality only "Austria" (quoted also by Baechli, G., 1988: Die Drosophiliden-Arten (Diptera) in der Sammlung des Naturhistorischen Museums Wien. Annln naturh. Mus. Wien 90b:131-148). No other records from Austria, as far as I know. |
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| helge |
Posted on 30-08-2021 14:53
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Member Location: Austria Posts: 1322 Joined: 10.02.16 |
Wonderful, thank you very much - also for the additional information! Helge  |
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