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Diptera.info :: Identification queries :: Diptera (eggs, larvae, pupae)
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Unknown Diptera larvae
Rouncie
#1 Print Post
Posted on 25-06-2014 14:03
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Location: Cornwall, UK
Posts: 7
Joined: 19.06.14

Hi all,

I'm currently processing water tray samples collected in oilseed rape in Wessex, UK, June-July 2013. I'm hoping to get all fly larvae at least down to Family but I have several that I haven't been able to get a reliable identification for.

The photos I have aren't great but I'm hoping that someone may have at least a rough idea what family they might belong to.

The first has cropped up in several samples, they are approx 2-3mm long. The have simple mouthparts, the posterior spiracles protrude on stalks and the segments have a wavy/ridged pattern. I thought they might be Agromyzids since the front spiracles seem to be adjacent but they are a lot darker than other examples I have seen and none seem to have this wavy pattern. Sorry I can't be more specific than that!

More to follow....
Rouncie attached the following image:


[44.66Kb]
Edited by Rouncie on 25-06-2014 14:06
 
Rouncie
#2 Print Post
Posted on 25-06-2014 14:13
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Location: Cornwall, UK
Posts: 7
Joined: 19.06.14

This second one is a similar size (2-3mm), again found in a few different samples now. The posterior spiracles are contained inside the last segment so I thought maybe Sarcophagidae?
Rouncie attached the following image:


[114.87Kb]
 
Rouncie
#3 Print Post
Posted on 25-06-2014 14:36
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Location: Cornwall, UK
Posts: 7
Joined: 19.06.14

I also found a few of these, but I'm not sure if they are fly larvae or not!
Rouncie attached the following image:


[100.85Kb]
Edited by Rouncie on 25-06-2014 14:38
 
atylotus
#4 Print Post
Posted on 25-06-2014 15:15
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Location: Amsterdam, NL
Posts: 1164
Joined: 29.05.09

the first 2 I don't know, the third and last is a Lonchopteridae larva
Edited by atylotus on 25-06-2014 15:15
 
Tony Irwin
#5 Print Post
Posted on 25-06-2014 19:04
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Location: Norwich, England
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The second one might be Sarcophagidae - females carry "ready-to-lay" first instar larvae, and often give birth in water traps - it's worth checking to make sure there were female Sarcophaga in the same trap, and maybe even dissecting some to get some reference material
Tony
----------
Tony Irwin
 
Rouncie
#6 Print Post
Posted on 27-06-2014 13:41
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Location: Cornwall, UK
Posts: 7
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Thank you both for your help
 
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