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Xema
13th Nov 2006, 02:45 AM
I have some problems identifying some snails of Thiaridae family.

I bought some snails labeled as Melonoides granifera fron a snail store in england. You can see it in the right side ot the follow picture.

http://i21.photobucket.com/albums/b263/Aquatika/Fauna%20Aquatica/Snails/melanoidesspp0105102006800.jpg

This week I got from Germany some snail labeled as Thiara scabra... At first view, looks like M. granifera of the above picture but more large.
Following a pictures of the snails I got from Germany labeled as Thiara scabra.

http://i21.photobucket.com/albums/b263/Aquatika/Fauna%20Aquatica/Snails/thiascabra0112112006800.jpg

What do you think??? Are both the same sp.???

TheTeh
13th Nov 2006, 06:31 AM
Hi Xema,

I have three of the 4 snails above. I don't have the black one one the left (what sp is this? It looks interesting!). The snails I have are M. tuberculata, M. maculata and the last one I think it is the same as mine, ie M. granifera.
Some of my M. granifera are reaching 2cm long!

I did a search on T. scabra and found this:
http://images.google.co.uk/images?sourceid=navclient&ie=UTF-8&rls=GGLJ,GGLJ:2006-33,GGLJ:en&q=Thiara%20scabra&oe=UTF-8&sa=N&tab=wi

So, I don;t think T. scabra is the same as M.granifera. From the google images above, I think you have M. granifera instead of T.scabra.

If you search using M. granifera you will get more photos looking like yours:
http://images.google.co.uk/images?svnum=50&hl=en&lr=lang_en&newwindow=1&rls=GGLJ%2CGGLJ%3A2006-33%2CGGLJ%3Aen&q=melanoides+granifera

Frank
13th Nov 2006, 07:29 AM
The black snails are exactly looking like the ones I have.
I was told they are Tarebia granifera.

Xema
13th Nov 2006, 07:33 AM
I am quite confused, looking in to the site Conchology.be (http://www.conchology.be/en/availableshells/searchresultsgallery.php?family=THIARIDAE), watching Thiaridae family, I can see Melanoides genus seems to have relative narrow shells and Thiara has some specimen with relitive similar shell.

Thiara sp.
http://www.conchology.be/images/Label/250000web/253320.jpg

Melanoide granifera
http://www.conchology.be/images/Label/340000web/349795.jpg


Another shell collection of Thiaridae family. (http://members.aol.com/Mkohl1/thiarida.htm)

About my melanoides colecction... blacks one is M. maculata, but spotted and clear one are M. tuberculata.

Maybe we can share some snails...

Xema
13th Nov 2006, 07:36 AM
The black snails are exactly looking like the ones I have.
I was told they are Tarebia granifera.

I bought them labeled as Mahogany Trumpet Snail.

Maybe you can post a picture of your T. granifera...

Frank
13th Nov 2006, 03:04 PM
Hi Xema,

I just have 1 blurry pic of these snails. My skill and equipment is not as well as yours. :cry:

TheTeh
13th Nov 2006, 04:47 PM
Xema, are you sure that the black one is M. maculata? I thought the third one (counting from the left) without brown spots is M.maculata?

Xema
13th Nov 2006, 08:31 PM
I never can be sure with this kind of classification... I know a malacologist, maybe he can help us.

Melanoides maculata from gasteropods.com (http://www.gastropods.com/8/Shell_29288.html)

http://www.gastropods.com/Shell_Images/L-n/Melanoides_maculata_1.jpg
http://www.gastropods.com/Shell_Images/L-n/Melanoides_maculata.jpg

Melanoides maculata from Specimenshells.com (http://www.specimenshells.net/3730.htm)

http://www.specimenshells.net/img/melanoides_maculata.jpg

See this M.caculata colection
(http://www.conchology.be/en/cyberconchology/newcyber/searchresults.php?family=THIARIDAE&species2=Melanoides%20maculata&family2=THIARIDAE)

Greets

flubber
11th Jun 2007, 02:27 AM
Hello Xema,

this is my third try to give you an answere for your question.
Sorry for my bad englich - I hope youŽll understand me.

The name of the right snail of your first picture is Thiara winteri.
We had the same problems to indentify this one. So we sent a snail to "Humbold Unsiversity of Berlin".

In free nature the snails build up little spines. This looks very beautiful.
I can show you a picture if you want.

:) - Andreas