Help needed please

[Andypaz]

Hi anyone tell me how to tell the difference between a Desmoceras and Cleoniceras I have googled it checked all my books but come up with nothing Thanks Andy

[Ludwigia]

All you need to do is look at photos of each of the genera and you can see the difference with the naked eye.

[caterpillar]

In general Desmoceras has a more rounded belly. Cleoniceras (Aioloceras) has a narrower belly