Taxacom: RES: Article 23.9 - Reversal of precedence

[Thomas Pape]

Note that the nomen oblitum -- nomen protectum clause can only be claimed when the senior name has not been used as valid after 1899.
When Fowler (1934) proposed the new subfamily name Pseudocrenilabrinae, he used the name as valid and it cannot become a nomen oblitum.

Michael: In zoology, we operate with the "Principle of Coordination", which is in force for species-group names, genus-group names and family-group names. For family-group names it runs like this:

--------------------------------------
Article 36.1. Statement of the Principle of Coordination applied to family-group names 

A name established for a taxon at any rank in the family group is deemed to have been simultaneously established for nominal taxa at all other ranks in the family group; all these taxa have the same type genus, and their names are formed from the stem of the name of the type genus [Art. 29.3] with appropriate change of suffix [Art. 34.1]. The name has the same authorship and date at every rank.
--------------------------------------

So, when Fowler (1934) proposed the new subfamily name Pseudocrenilabrinae, he is considered to have proposed also family-group names at other ranks within the family group:

Family Pseudocrenilabridae Fowler, 1934
Tribe Pseudocrenilabrini Fowler, 1934
Subtribe Pseudocrenilabrina Fowler, 1934

This means that a new subtribe named Pseudocrenilabrina would be homonymous to an earlier proposed tribal name Pseudocrenilabrini.

/Thomas


-----Original Message-----
From: Taxacom <taxacom-bounces at lists.ku.edu> On Behalf Of Paulo Buckup via Taxacom
Sent: 9. juni 2024 16:13
To: taxacom at lists.ku.edu
Subject: Taxacom: RES: Article 23.9 - Reversal of precedence

Michael wrote:
"Specifically, the subfamily name Pseudocrenilabrinae and a new subtribe named  Pseudocrenilabrina would not be affected by invalidation of the tribe name Pseudocrenilabrini, would they?"
Just to make it clear: There is no "new name" here and none should be "proposed". All these names are one and the same and refer to the same family-group name, and the authorship is Fowler (1934). The rule of Reversal of Precedence (Article 23.9) only applies to cases of synonymy. The *nomen
ablitum* remains available and should be used as a valid name whenever the *nomen protectum* is not synonymous, as it is the case of
*Pseudocrenilabrina* (whenever *Haplochromis* is not included in this subtribe). The Example next to Article 23.9.2 demonstrates when a "nomen
oblitum* should be used as a valid name.
Cheers,

Paulo Buckup
-----Mensagem original-----
De: Taxacom [mailto:taxacom-bounces at lists.ku.edu] Em nome de Francisco Welter-Schultes via Taxacom Enviada em: domingo, 9 de junho de 2024 06:41
Para: taxacom at lists.ku.edu
Assunto: Re: Taxacom: Article 23.9 - Reversal of precedence

Brilliant. Thank you Michael for this precious question. Such requests are very useful because we can provide such cases as Examples for the next Code edition.

Stephen was apparently on the right path. If I have not overlooked something important.

Decisive should be Art. 23.3.1:

"23.3.1. Priority of the name of a nominal taxon is not affected by elevation or reduction in rank of the taxon within the family group, genus group or species group [Arts. 36, 43, 46], nor by any mandatory change in suffix of a family-group name consequent upon change in rank [Art. 34]."

If the action was taken under Art. 23.9.2 then the senior name as such was fixed as not having precedence over the junior name. The term "synonym"
refers to a name, which can be extracted from the Glossary.

GLOSSARY
"synonym, n. Each of two or more names of the same rank used to denote the same taxonomic taxon."

So under Art. 23.9.2 was determined that the senior tribe name should not have precedence over the junior tribe name.
Art. 23.3.1 determines that priority is not affected by reduction of this tribe name in rank to denote a subtribe name.
So the synonymy will also apply to the subtribe situations.

Michael, could you provide your publication for being used as an Example to illustrate this case? Is it open access?

Best wishes
Francisco

Am 09.06.2024 um 03:42 schrieb Stephen Thorpe via Taxacom:
>   My understanding is that the rank is irrelevant if family group 
> taxon A
is given precedence over family group taxon B, then it has precedence whatever the rank.
> Cheers, Stephen
>      On Sunday, 9 June 2024 at 12:07:56 pm NZST, Michael Oliver via
Taxacom <taxacom at lists.ku.edu> wrote:
>   
>   Fowler (1934) proposed the new subfamily name Pseudocrenilabrinae 
> for his new cichlid fish species *Pseudocrenilabrus natalensis* (which 
> he thought was a wrasse). This subfamily name is currently used for 
> the cichlid clade including all African and Middle Eastern cichlids.
> Within this subfamily, the largest tribe is known as Haplochromini 
> Hoedeman 1947. However, this tribe contains the genus 
> *Pseudocrenilabrus*, and Pseudocrenilabrini (a name never used) 
> predates Haplochromini. I intend under Article 23.9 to protect the 
> younger name Haplochromini (nomen protectum) and invalidate 
> Pseudocrenilabrini (nomen oblitum). All requirements of Article
> 23.9.1.1 and 23.9.1.2 are met; thus, the prevailing use of 
> Haplochromini
must be maintained.
> 
> Here's my question: I also intend to coin several subtribes within 
> Haplochromini, including one for the group including *Pseudocrenilabrus*.
> Invalidating an older name at one family-group rank doesn't invalidate 
> names based on the same stem at other ranks, does it? Specifically, 
> the subfamily name Pseudocrenilabrinae and a new subtribe named 
> Pseudocrenilabrina would not be affected by invalidation of the tribe 
> name Pseudocrenilabrini, would they?
> 
> Cheers
> Michael
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