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Hi Diptera fellows

I propose some view of Hemerodromiinae larvae, I suppose they are Hemerodroma Meigen ?
These organims were collected alive in the freshwater of a Haute Ardenne belgian fount "La Lienne"
The water was terribly ferruginous and few water fleas that live there were literally covered by a "red orange sticks" (which I think is goethite and limonite).

Hemerodromia larvae (3 mm length) were not covered by these precipitates.

But they have a strange appearance. Is the natural appearance of their skin?













a video clip will follow

merci for the attention
SDS

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YouTube Video

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HI
a new larva found in another stream
3mm length
some pictures about

the protuberances visibles on the skin
dorsal view and profile view





setae on the 3 thoracic parts (profile view)



the prolegs hooks when retracted (left proleg)




SDS