Hello Atylotus
Nice to read you
I understand very well your opinion and vision of the facts
and I will use Tipula spec to determine this larva
You know that to evaluate quality water or biodiversity of a water sample, we use a 500µ sieve to filter the sample and so separate microinvertebrates and macroinvertebrates, as the normalised process ask it to do.
So, we have sometimes very tiny larvae (between 500µ and 1mm) but we have nevertheless to determine them till the family (here Tipulidae was enough) but evolving standards will require increasingly determinations to species in the future...(when it's possible of course)
Thanks a lot
here is the clip
The first part (00.00" to 38:00") result of Wild Herrbrugg binocular stereomicroscop recording.