Chapter 10: Species-group Nominal Taxa and their Names


Article 45. The species group.

45.1. Definition. The species group encompasses all nominal taxa at the ranks of species and subspecies (see also Article 10.2).

45.2. Provisions applicable to all species-group nominal taxa and their names. Species-group nominal taxa and their names are subject to the same provisions irrespective of rank within the species group, except when these apply explicitly to names at one rank alone (for interpolated names to denote aggregates of species or subspecies see Article 6.2).

45.3. Application of species-group names. The application of each species-group name is determined by reference to the name-bearing type [Arts. 61, 71 to 75] of the nominal taxon denoted by the combination in which the species-group name was established.

45.4. Formation and treatment of species-group names. A species-group name is to be formed and treated in accordance with Article 11 and the relevant provisions of Articles 19, 20, 23 to 34.

45.5. Infrasubspecific names. A name expressly proposed to denote an infrasubspecific entity (see Glossary) is not an available name unless the provisions of Article 45.6 specify otherwise; it is excluded from the species group and is not regulated by the Code [Art. 1.3.4]. A fourth name published as an addition to a trinomen automatically denotes an infrasubspecific entity (however an interpolated species-group name [Art. 6.2] is not regarded as an addition to a trinomen).

45.6. Determination of subspecific or infrasubspecific rank of names following a binomen. The rank denoted by a species-group name following a binomen is subspecific, except that


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Markup
FranciscoWelterSchultes   45.6.2.

This Article should be slightly improved.

"45.6.2. it is deemed to be infrasubspecific if its author used one of the terms "aberration" or "morph", or any equivalent term or abbreviation in another language ("ab.", "aberr." etc.);"

This would align the English Code with the French Code. Improving the English version was suggested in a discussion in the [iczn-list] mailing list in Oct 2013.
2013-10-16 10:27:57
FranciscoWelterSchultes   Example 3 under 45.6.4.1 is incorrect and should be modified.

Poliński (1929) described a terrestrial gastropod Fruticicola unidentata unidentata natio subtecta, explicitly stating that it was only "une forme" which did not merit subspecific rank. However, Klemm (1954) adopted Trichia (Petasina) unidentata subtecta (Polinski) as the valid name of a subspecies, and the subspecific name subtecta is therefore deemed to be available from Poliński, 1929.
2010-01-04 15:58:11

Article45 (last edited 2009-04-27 12:42:03 by localhost)