[Taxacom] possible genus homonym nomenclatural question

[Adam Cotton]

On 13-06-2020 00:34, John Grehan via Taxacom wrote:
> Dear colleagues,
>
> A friend of mine asked about why the genus name Clymna Hutton 1883 for a
> group of snails is not a homonym a butterfly genus of the same name
> under Calymma Hübner, 1823 (
> https://www.nhm.ac.uk/our-science/data/butmoth/search/GenusDetails.dsml?NUMBER=4898.0
> )
>
> If it is a homonym then the synonymy of the snail genus Flammocharopa
> under Calymna Hutton, 1883 would presumably be incorrect (see
> https://www.molluscabase.org/aphia.php?p=taxdetails&id=820085 )
>
> Perhaps I have missed something obvious, but I would be grateful for
> insight from any on this list well acquainted with such issues. And please,
> for those of you inclined to respond with unkind remarks about my knowledge
> or understanding of nomenclature, keep them to yourselves. I am not
> interested. Hopefully someone will be able to provide
> clarification/corroboration of my current inference.
>
> Thank you,
>
> John Grehan
 >
 >
 >


Calymna Hutton 1883 is not a junior homonym of Calymma Hübner, 1823 
because Hutton's name is spelt with 'mn' whereas Hübner's is 'mm'. A one 
letter difference in the name is sufficient to exclude homonymy (ICZN 
article 56.2).

Calymma Hübner, 1823 is not a butterfly genus but a moth belonging to 
family Erebidae.

I hope this helps.
Adam.