I found some kind of laong, slimy sack under a stone inside a cold brook in the mountains. At home, under the microscope I saw that really tiny nematoceran lavae were coming out from it - freshly emeged from eggs, I think.
pwalter attached the following image:
It is the larvae of a Chironomidae, Tanypodinae for sure, but I have no idea about the species or even genus. All Chironomidae lay their eggs in a long slimy sac, which they attach to a hard subtrate at one end. They can contain numerous eggs.
I can no longer send private messages (and maybe not receive?), even though my inbox and outbox are not yet full. I write, click "send" and they disappear and never show up in the outbox.
Tried to attach an image to a forum post. jpg, 32kB, 72dpi, no blanks, ... File name is correctly displayed, but when I click "Preview Thread" it just vanishes. Help!