Dance of the Cercaria

[Ariel Qassis]

Hello,
Here is a video of a Cercaria (a Trematode larva, xiphidiocercaria?)
10-100x, enjoy 

[Alfons Renz]

Excellent video, and the sting (stilet) of the xiphidiocercaria is clearly visible!
Can you remember the species of the snail, from which the cercaria emerged?

Greetings,
Alfons

[Ariel Qassis]

Thank you Alfons!
No snails were present in the sample, but dozens of those Cercariae.
Its the 2nd time I found those in that urban pond.
Thanks again for answering.