[Taxacom] Question about labelling types

[Welter-Schultes, Francisco]

The status of the so-called holotype is a syntype, and I see no recommendation that for lectotype designation a specimen labelled (by whom?) as a holotype should be given preference. See Recommendations 74A-E where other points are listed which should induce preference choices.

Recommendation 74A. Agreement with previous restriction. In designating a lectotype, in order to preserve stability of nomenclature an author should act consistently with, and in any event should give great weight to, previously accepted taxonomic restrictions of the application of the name.

Recommendation 74B. Preference for illustrated specimen. Other things being equal, an author who designates a lectotype should give preference to a syntype of which an illustration has been published.

Recommendation 74C. Data on the lectotype. An author who designates a lectotype should publish for it the data listed in Recommendation 73C, besides describing any individual characteristics by which it can be recognized.

Recommendation 74D. Choice between syntypes in several collections. When possible, a lectotype should be chosen from syntypes in the collection of a public institution, preferably of the institution containing the largest number of syntypes of the nominal species-group taxon, or containing the collection upon which the author of the nominal species-group taxon worked, or containing the majority of that author's types.

Recommendation 74E. Verification of locality. When selecting a lectotype, the author should, if possible, verify the accuracy of the locality ascribed to it. A syntype of known locality should be preferred to one of unknown origin.

Cheers
Francisco 
________________________________________
Von: Taxacom [taxacom-bounces at mailman.nhm.ku.edu]" im Auftrag von "Stephen Thorpe [stephen_thorpe at yahoo.co.nz]
Gesendet: Samstag, 27. Februar 2016 23:42
An: taxacom at mailman.nhm.ku.edu; Julio Rivera
Betreff: Re: [Taxacom] Question about labelling types

Julio,

They are syntypes, but the one labelled as holotype should be chosen as lectotype (if a lectotype is to be designated).

Cheers,

Stephen

--------------------------------------------
On Sun, 28/2/16, Julio Rivera <jrivera at lamolina.edu.pe> wrote:

 Subject: [Taxacom] Question about labelling types
 To: "taxacom at mailman.nhm.ku.edu" <taxacom at mailman.nhm.ku.edu>
 Received: Sunday, 28 February, 2016, 11:07 AM

 Hi taxacomers

 I have a situation with the type series of a praying mantis
 species. Giglio-Tos
 (1916) described *Diamusonia media* (now *Thespis media*) on
 the basis of
 three specimens. Giglio-Tos did not designate any particular
 specimen as
 the type. Although these specimens were presumed to be
 syntypes in at least
 one subsequent publication, I recently discovered that one
 of these
 specimens does bear a holotype label. So, if the label
 identifies the
 specimen as the holotype but it was not explicitly
 designated as such in
 the original description, What is the name-bearing status of
 this specimen?
 Still a holotype?

 Thanks in advance for your advice.

 Regards,


 --

 *Julio Rivera*Associated Researcher
 ZOOTAXA Editor for Insecta-Mantodea
 Postal Address:
 Museo de Entomología *Klaus Raven Buller*
 Universidad Nacional Agraria La Molina
 Apartado Postal 456
 Lima 100
 Peru
 E.mail: jrivera at lamolina.edu.pe
 <jrivera at lamolina.edu.pe>Skype:
 julio.rivera.mantodea
 Telephone: (+1) 416-585-8046
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 Channeling Intellectual Exuberance for 29 years in 2016.
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