Help ID freshwater flagellate, Salpingoeca?

[carlos.uruguay]

This small flagellate rears its body from the inside of a lorica.
The lorica measures approximately 20um.
Its body approximately 10um.
Its flagellum also 10um.
Perhaps, without security, it is Salpingoeca genus.
Any information for identification is welcomed.
Phase contrast FL immersion objective.
Sony DXC950 camera
Link:
http://www.youtube.com/watch?v=34XXAInDio0
Regards
carlos

[Charles Krebs]

Carlos,

I would agree that it is Salpingoeca, As to species

[Jacek]

super Video

[carlos.uruguay]

Thanks Arturo and Jacek for see the video and for your comments.
Arturo, I could not find references of a lorica as large in the genus Salpingoeca
but in this genre should have many species unknown by my

[Bruce Taylor]

Great video of one of our closest cousins in the protist world.

Many species of Salpingoeca have been named (I seem to recall reading that there were more than 50). It would take a long time to dig through the literature properly!

However, a quick glance shows that some types do have rather long loricas. S. vaginicola, (as described in Yoshine, 964) is similar in shape and only a few micrometres shy of your 20 µm. And Kent describes the freshwater species S. gracilis as having a lorica between 30 and 50 µm in length, sometimes with a stalk, but sometimes just rounded or slightly tapered in the posterior. He describes S. gracilis as an extremely variable species...from which we can probably guess that it is more of a general morphotype than a biological species. His images of that species look somewhat like your guy.

No doubt there are other described "species" of Salpingoeca that live in tall, narrow "vases". [/i]

[carlos.uruguay]

Thank you very much dear Bruce