Martin Harvey's picture

Clear Glass Snail? Buckinghamshire

Observed: 7th January 2012 By: Martin Harvey
Berkshire Moth GroupFSC - Field Studies CouncilSoldierflies and Allies Recording SchemeBuckinghamshire Invertebrate Group
Invertebrates expert
IMG_5453
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Description:

From leaf litter. This was about 4mm across, so I came to the conclusion that it might be Aegopinella pura - is it possible to confirm?

Identifications
Species interactions

No interactions present.

Comments

martinjohnbishop's picture

Distinction from A. nitidula

Kerney & Cameron p. 120-121
Correct size and number of whorls but I cant see the microsculpture of the shell. I find it hard from a photograph but if you have reference specimens of each it should be easy.

Dluogs's picture

Transparent snails

I have a blurred photo of an empty transparent snail shell similar size - it was caught in a cobweb on a treetrunk in a deciduous wood on chalk. From your comments, it won't be identifiable to species but is there a genus or other group I could narrow it down to? I know next to nothing about snails yet.

Thank you!

martinjohnbishop's picture

Group is zonitoid

Zonitidae it the wider sense as used in Kerney & Cameron. Checklist at http://www.conchsoc.org/recording/checklist.php

For modern view see http://molluscs.at/gastropoda/terrestrial/zonitidae.html

Dluogs's picture

Thanks!! That's great!

Thanks!! That's great!

Martin Harvey's picture

microsculpture

The radial growth lines were fairly clear, but the spiral striae were not at all clear - I thought I could just make them out in places but they weren't as clear as the key seems to indicate. So my judgement was on size and number of whorls, but it looks like this one will have to remain unconfirmed.

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Entomologist and biological recorder

martinjohnbishop's picture

Do you have the specimen?

If so I can check it against the material in the University Museum of Zoology, Cambridge

Martin Harvey's picture

specimen

I do keep specimens sometimes, but didn't in this case I'm afraid. Will see if I can find some more of them.

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Entomologist and biological recorder

martinjohnbishop's picture

I think this is a juvenile A. nitidula