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Diptera.info :: Identification queries :: Diptera (eggs, larvae, pupae)
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Stratiomyidae larvae - Stratiomys, Odontomyia?
Sundew
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Posted on 20-09-2021 23:44
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Location: Berlin, Germany
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Hi,
In the last days I have often been at a small artificial pond that the Nature Conservancy had built on a sunny meadow. I was impressed by the amount of Stratiomyidae larvae swimming in the water and also crawling around on land. The largest ones measured at least 4 cm.
The location is southwestern Germany, west of Stuttgart.
Sundew attached the following image:


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Sundew
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Posted on 20-09-2021 23:48
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Most of the larvae belonged to the genus Stratiomys, and according to the description https://diptera.i...d_id=33074 by atylotus I'd vote for S. longicornis.
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Sundew
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Posted on 20-09-2021 23:49
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Some larvae, however, looked different and could be Odontomyia ornata, right?
Sundew attached the following image:


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Sundew
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Posted on 20-09-2021 23:53
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And one last question: in another artificial pond, numerous egg clusters were attached to a stone lying in the water. Could these also be from Stratiomyidae? I saw similar pictures on the internet.
Thank you very much in advance for comments on the two species as well as the eggs,
Sundew
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atylotus
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Posted on 21-09-2021 20:20
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Location: Amsterdam, NL
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Dear Sundew
I also vote for Str. longicornis, but I think the other one is Oplodontha viridula. What is the approximate size of that one? about 1.5cm (then viridula) or closer to 3 cm (then O. ornata)?
The egg clusters looks like the one I have seen from Ceratopogonidae and the hebitat may suggest Dasyhelea, but not sure though.
All the best from Amsterdam
Ton aka Atylotus
 
Sundew
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Posted on 30-09-2021 14:22
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Sorry for the late reply, dear Ton, I am on vacation.
As the first picture shows, the larvae of Stratiomys and of Oplodontha are of the same size and measure 3 cm at least. So ornata should be the right choice.
As to the eggs, those from Stratiomys shown in https://www.makro...ongicornis seem to be bigger indeed. So we won't find out who laid them. No problem!
Many thanks, Claudia aka Sundew
 
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23.09.21 15:29
All sorted.

16.09.21 22:24
Sorry put 5 new threads in Asilidae forum instead in Syrphidae forum, can pleas an admin move it to Syrph? THANKS, Norbert

09.09.21 07:48
https://www.jeugdb
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product/de-vliegen
families-met-drie-
voetkussentjes/

09.09.21 07:47
wing ventation is totally different

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28.06.21 15:24
thx TO eklans

03.06.21 11:11
@Tony Irwin Thank you Tony! I've emailed you there Pfft

02.06.21 22:26
Rob - can you PM me with an e-mail address, and I'll send it over.

02.06.21 13:16
Hello chaps! Does anyone have a copy of: Revision of the willow catkin flies, genus Egle Robineau-Desvoidy (Diptera: Anthomyiidae), in Europe and neighbouring areas ?? I'd be ever so grateful! Rob

31.05.21 14:31
The part that got deleted is "longer, dark median stripe on thorax"

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