[Syrphidae] Re: larva

[Francis Gilbert]

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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