[Syrphidae] Re: larva

[Nobby Scarlet]

Hello Francis,

In attachment some more pictures but i have a hard time taking good 
pictures...

Maybe these help and off course i understand if further determination is 
not possible by  means of pictures.

I was surprised by the extruded anal gills and did not see this in any 
picture of hoverfly larvae and learned a lot thanks to the reply of 
members of this list!

Thank you !
Nobby

------ Origineel bericht ------
Van: "Francis Gilbert" <Francis.Gilbert at nottingham.ac.uk>
Aan: "Nobby Scarlet" <nobby.thys at scarlet.be>; "hoverfly discussion list" 
<syrphidae at lists.nottingham.ac.uk>
Verzonden: 22-6-2021 09:36:56
Onderwerp: RE: [Syrphidae] larva

>hi Nobby
>
>
>
>The larva seems to  be an eristaline but we need a picture of the whole 
>larva, really. The "smaller kind of tubes" are the extruded anal 
>"gills" that are usually held within the rectum, and are almost 
>certainly involved in active ionic exchanges. If we could see them all, 
>together with any lappets at the end of the body (base of the 'tail') 
>and the anterior spiracles clearly (they are there but very out of 
>focus) then we might stand a chance of identifying it.
>
>
>
>Best wishes
>
>
>
>Francis
>
>
>
>
>
>From:syrphidae-bounces at lists.nottingham.ac.uk 
>[mailto:syrphidae-bounces at lists.nottingham.ac.uk] On Behalf Of Nobby 
>Scarlet
>Sent: 21 June 2021 19:27
>To: hoverfly discussion list <syrphidae at lists.nottingham.ac.uk>
>Subject: [Syrphidae] larva
>
>
>
>>Hello,
>
>
>I found this larva in a running water in Limburg.
>
>I have never seen a larve with a respiratory tube and different 
>smallers kind of tubes near the base...
>
>
>
>Does anyone recognize the species of genus ?
>
>
>
>Greetings,
>
>Nobby
>
>
>>
>
>
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