Hypotrichia: Oxytricha ?

pjoris · Post by **pjoris** » Sun Feb 12, 2012 7:29 am

I assume this is some species of Hypotrichia (size approx 200 micrometer). Even with the guide from Patterson and the paper from Foissner and Berger, it still is very difficult for me to to identify them further. It might be Holosticha (or not, of course). Anybody with a more definite id (and tips for the id) ?

Joris

Olympus BH2, Splan 40 and Splanapo 20, Pentax K20D

pjoris · Post by **pjoris** » Wed Feb 15, 2012 3:41 am

I looked a bit further, and I assume it might be an Oxytricha, possibly O. bifaria ("with slightly pointed rear end" from "How to know the protozoa" Jahn et. al). Other opinions still wellcome. Joris

Bruce Taylor · Post by **Bruce Taylor** » Wed Feb 15, 2012 5:38 am

To me, it looks more like a uroleptid...in particular, Paruroleptus musculus. However, it can be very difficult to identify hypotrichs & stichotrichs to genus level without counting kineties and macronuclei, analyzing the distribution of cirri, etc.

pjoris · Post by **pjoris** » Wed Feb 15, 2012 5:49 am

Ah, interesting suggestion. I'm seeing in the books the options and what I should be seeing to separate them. Now only find the characteristics in real live. The pictures don't show the position of the ventral cirri - so I wil leave it at unidentified for now ... Joris