ID please, Carchesium ? (image added)

Marek Mis · Post by **Marek Mis** » Sun Dec 15, 2013 1:50 am

I previuosly thought it was Carchesium, but I am not sure it, now.
So I will be very grateful for the identification.

Polarized light with retarders
Lumipan - an old CZJ microscope
20 X Oly. Splan Apo
2,5 X NFK

Bruce Taylor · Post by **Bruce Taylor** » Sun Dec 15, 2013 8:06 am

A very pretty picture.

Do you have images of the stalks? The shape of the zooid is not sufficient for identification. ID of sessile peritrichs usually begins with the stalk (does it have a myoneme, is the myoneme continuous or broken, is its mode of contraction zigzag or spiral, etc.) If you can see the stalk in vivo, it is usually possible to get down to family level, and often possible to assign your specimen to genus (however to get down to genus level sometimes requires a clear view of other features, such as pellicle, and oral ciliature).

Marek Mis · Post by **Marek Mis** » Sun Dec 15, 2013 9:06 am

Bruce,

Thank you very much for the immediate answer.
I am enclosing additional image. I hope it will help you in the ID. Unfortunately this image is the only additional one.

Marek

Bruce Taylor · Post by **Bruce Taylor** » Sun Dec 15, 2013 9:13 am

Ah, as I suspected.

No myoneme in stalk, strong peristomial lip, single winding of peristomial membranelles: Epistylis.

Marek Mis · Post by **Marek Mis** » Sun Dec 15, 2013 9:26 am

Bruce,

Thank you very much ! I am very grateful for so quick ID. I needed it very much.

Marek

Jacek · Post by **Jacek** » Sun Dec 15, 2013 12:37 pm

nice photos

Marek Mis · Post by **Marek Mis** » Mon Dec 16, 2013 6:36 am

Thank you Jacek !

Marek

carlos.uruguay · Post by **carlos.uruguay** » Mon Dec 16, 2013 11:53 am

Stunning photos!

Marek Mis · Post by **Marek Mis** » Tue Dec 17, 2013 4:32 am

Thank you Carlos

Marek