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Diptera.info :: Identification queries :: Diptera (eggs, larvae, pupae)
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Larvae - probably Nematocera
Marion Friedrich
#1 Print Post
Posted on 20-09-2023 09:20
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Location: Saxony, Germany
Posts: 1129
Joined: 07.10.09

Hello,
On September 3rd I picked up a piece of a mushroom that had lots of Hirtodrosophila trivittata on it. Unfortunately they all disappeared. On September 6th I observed some larvae on the lid of the container with the mushroom residue, which were probably looking for a place to pupate. These then vanished again. On September 15, some adult Hirtodrosophila trivittata appeared in the container.
Can anyone confirm that the larvae shown here could be larvae of Hirtodrosophila trivittata?
Thanks,
Marion

(Germany, Saxony, Pleurotus? mushroom on a dead aspen)
Marion Friedrich attached the following image:


[145.54Kb]
Edited by Marion Friedrich on 20-09-2023 18:51
 
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Marion Friedrich
#2 Print Post
Posted on 20-09-2023 09:21
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Location: Saxony, Germany
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Joined: 07.10.09

2nd picture
Marion Friedrich attached the following image:


[161.35Kb]
 
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Marion Friedrich
#3 Print Post
Posted on 20-09-2023 09:29
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Location: Saxony, Germany
Posts: 1129
Joined: 07.10.09

one of the hatched flies
Marion Friedrich attached the following image:


[55.87Kb]
 
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Jan Maca
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Posted on 20-09-2023 13:36
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The larvae seem to belong to some Nematocera.
 
John Carr
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Posted on 20-09-2023 16:06
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Location: Massachusetts, USA
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Jan Maca wrote:
The larvae seem to belong to some Nematocera.


From appearance and habitat, probably Sciaridae or Mycetophilidae.

The key to Nearctic larvae says

Posterior tentorial bridge complete or nearly complete (usually visible beneath integument within occipital cavity in preserved specimens without special treatment). Abdominal creeping welts without sclerotized spicules ... Sciaridae

Posterior tentorial bridge absent or if bridge partially formed, abdominal creeping welts with sclerotized spicules ... Mycetophilidae [sensu lato], in part
 
http://www.flickr.com/photos/31715949@N00
Marion Friedrich
#6 Print Post
Posted on 20-09-2023 18:45
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Location: Saxony, Germany
Posts: 1129
Joined: 07.10.09

Thank you both. I'll wait a while longer. Maybe a few Nematocera will hatch, but that's not very likely.
Today I visited the original location again. There were some freshly grown mushrooms populated only with Hirtodrosophila.

Best regards,
Marion
 
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