Diptera.info :: Identification queries :: Diptera (adults)
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 Ephydridae - Scatella ?
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| Igor Grichanov |
Posted on 20-02-2016 09:36
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 Member Location: St.Petersburg, Russia Posts: 1704 Joined: 17.08.06 |
Please help. The fly from greenhouse with tomatoes, North Caucasus, February 2016.
Igor Grichanov attached the following image:  [194.47Kb] Edited by Igor Grichanov on 20-02-2016 10:41 Igor Grichanov |
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| Igor Grichanov |
Posted on 20-02-2016 09:36
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Member Location: St.Petersburg, Russia Posts: 1704 Joined: 17.08.06 |
Head
Igor Grichanov attached the following image:  [196.26Kb] Edited by Igor Grichanov on 20-02-2016 09:43 Igor Grichanov |
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| Cranefly |
Posted on 20-02-2016 10:17
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Member Location: Shachovskaya Posts: 646 Joined: 17.09.08 |
Scatella - Ephydridae. The same situation as with Sciaridae thread Too much wet decaying substartes. Stop watering greenhouse for several days to make the soil dry.
Edited by Cranefly on 20-02-2016 10:21 |
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| Cranefly |
Posted on 20-02-2016 10:20
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Member Location: Shachovskaya Posts: 646 Joined: 17.09.08 |
Sometimes this effect may be result of phytophtora desease
Edited by Cranefly on 20-02-2016 10:21 |
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| Tony Irwin |
Posted on 20-02-2016 10:55
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 Member Location: Norwich, England Posts: 7200 Joined: 19.11.04 |
This one is Scatella tenuicosta. They feed on the algae that live on the damp soil, and while they do not damage the plants directly, they are implicated in the spread of various plant diseases. Could I have the location for this record, please?
Tony ---------- Tony Irwin |
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| Igor Grichanov |
Posted on 20-02-2016 11:22
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Member Location: St.Petersburg, Russia Posts: 1704 Joined: 17.08.06 |
The species keys to Scatella stagnalis (after Nartshuk, 1970), because the wings bearing light spots, body black and costa not thinned. Is it right? Scatella stagnalis is a common species in greenhouses: http://www.ipm.illinois.edu/greenhouse/insects/shore_flies/index.html Collection point - 44°01′25″ N 41°56′54″ E Edited by Igor Grichanov on 20-02-2016 11:33 Igor Grichanov |
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| Tony Irwin |
Posted on 20-02-2016 13:59
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Member Location: Norwich, England Posts: 7200 Joined: 19.11.04 |
The thickness of the costa is variable in tenuicosta, although stagnalis is generally thicker. The shape of the apical white spot (with constricted middle) is right for tenuicosta. S.stagnalis has a rounded spot. Although S.stagnalis is often recorded from greenhouses, I have looked at several thousand greenhouse Scatella, and never found stagnalis. In the Holarctic region, only tenuicosta and obscura are found in greenhouses. (paper in preparation). Tony ---------- Tony Irwin |
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| Igor Grichanov |
Posted on 20-02-2016 14:35
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Member Location: St.Petersburg, Russia Posts: 1704 Joined: 17.08.06 |
Thank you very much, Tony! Do you need more pictures to confirm the ID?
Igor Grichanov |
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| Tony Irwin |
Posted on 20-02-2016 18:57
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Member Location: Norwich, England Posts: 7200 Joined: 19.11.04 |
No, I'm happy with the ID - but I'd like to include the record in my paper, so a location would be good (North Caucasus looks like a big place!) Thanks, Tony
Tony ---------- Tony Irwin |
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| Igor Grichanov |
Posted on 21-02-2016 13:18
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Member Location: St.Petersburg, Russia Posts: 1704 Joined: 17.08.06 |
Russia: Karachay-Cherkessia, v.Kubina, Agrokombinat Yuzhnyi 44°01′25″N/41°56′54″E Greenhouse, tomato,1-11.ii.2016 Igor Grichanov |
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| Tony Irwin |
Posted on 21-02-2016 16:13
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Member Location: Norwich, England Posts: 7200 Joined: 19.11.04 |
Thanks, Igor
Tony ---------- Tony Irwin |
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but don't see the image in the post.