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Type: Article
Published: 2021-11-08
Page range: 1–8
Abstract views: 571
PDF downloaded: 3

Optical discs in zoological nomenclature: problems and proposed solution

Institut de Systématique, Évolution, Biodiversité (ISYEB), Muséum national d’Histoire naturelle, CNRS, Sorbonne Université, EPHE, Université des Antilles, Paris, France
Department of Aquatic Biology and Fisheries, University of Kerala, Karyavattom, Thiruvananthapuram 695 581, Kerala, India
Department of Biology and Center for Biodiversity and Ecosystem Stewardship, Villanova University, Villanova, Pennsylvania 19085, USA.
Museu de História Natural e da Ciência, Universidade do Porto, Praça de Gomes Teixeira, 4099-002 Porto, Portugal
Department of Terrestrial Invertebrates, The National Museum, Bloemfontein, South Africa; Department of Biological & Environmental Sciences, Walter Sisulu University, Mthatha, South Africa
División Entomología, Universidad Nacional de la Plata, CONICET, Museo de La Plata, Paseo del Bosque s/n, La Plata, Buenos Aires, Argentina
Division of Entomology, Natural History Museum, and Department of Ecology & Evolutionary Biology, 1501 Crestline Drive, Suite 140, University of Kansas, Lawrence, Kansas 66045, USA
Association RACINE, 5 allée des Cygnes, 35750 Saint Maugan, France
Muséum d’Histoire Naturelle, Route de Malagnou 1, 1208 Genève, Switzerland
Écologie et Santé des Écosystèmes, ESE – UMR 0985 – INRAE, Agrocampus Ouest, 65 rue de Saint-Brieuc, 35042 Rennes, France
Biosecurity Surveillance & Incursion Investigation Plant Health Team, Ministry for Primary Industries, Christchurch, New Zealand
Institut de Systématique, Évolution, Biodiversité (ISYEB), Muséum national d’Histoire naturelle, CNRS, Sorbonne Université, EPHE, Université des Antilles, Paris, France
Universität Greifswald, Allgemeine & Systematische Zoologie, Greifswald, Germany
FlyEvidence, Conway House, 27 Stoke Gabriel Road, Galmpton, TQ5 0NQ, England, United Kingdom
School of GeoSciences, University of Edinburgh, Edinburgh, Scotland, UK
Member of the International Commission on Zoological Nomenclature; retired head of the invertebrate collection (except insects), Biology Centre of the Upper Austrian Museum, J.-W.-Klein-Str. 73, 4040 Linz, Austria
Code publication promulgation optical discs compact discs DVDs nomenclatural availability technology dependence technological obsolescence facsimile


According to the Code currently in force, taxonomic works presenting nomenclatural novelties published on optical discs may be nomenclaturally available only if published between 1985 and 2013, and respecting some conditions allowing their nomenclatural promulgation. These works will remain accessible to readers only as long as the technologies allowing to read such discs are available to all, but will become inaccessible when these technologies become obsolete. In order to overcome this technology dependence, the Linz Zoocode Committee has decided to publish facsimiles of these works, both on paper and online. For this to be possible, a list of these works needs to be built. We are therefore sending an appeal to the international community to provide information on all taxonomic works including nomenclatural novelties published so far on optical discs, whether available or not under the current Code.


  1. Anonymous [International Commission on Zoological Nomenclature] (1999) International code of zoological nomenclature. ‘Fourth edition’. London (International Trust for zoological Nomenclature): i–xxix + 1–306.

  2. Anonymous [International Commission on Zoological Nomenclature] (2008) Proposed amendment of the International Code of Zoological nomenclature to expand and refine methods of publication. Zootaxa, 1908: 57–67. <>.

  3. Anonymous [International Commission on Zoological Nomenclature] (2012) Amendment of Articles 8, 9, 10, 21 and 78 of the International Code of Zoological Nomenclature to expand and refine methods of publication. Bulletin of zoological Nomenclature, 69 (3): 161–169. <>.

  4. Anonymous [International Commission on Zoological Nomenclature] (2014) Zoological nomenclature and electronic publication—a reply to Dubois et al. (2013). Zootaxa, 3779 (1): 3–5. <>.

  5. Beukema, W., Pous, P. de, Donaire-Barroso, D., Bogaerts, S., Garcia-Porta, J., Escoriza, D., Arribas, O. J., El Mouden, E. H. & Carranza, S. (2013) Review of the systematics, distribution, biogeography and natural history of Moroccan amphibians. Zootaxa, 3661 (1): 1–60. <>.

  6. Donaire Barroso, D. & Bogaerts, S. (2003) A new subspecies of Salamandra algira Bedriaga, 1883 from northern Morocco. Pod@rcis, 4 (3): 84–100.

  7. Dubois, A. (2000) Synonymies and related lists in zoology: general proposals, with examples in herpetology. Dumerilia, 4 (2): 33–98.

  8. Dubois, A. (2008) Identifying some major problems and their possible solutions. In: Future trends of taxonomy, EDIT Symposium, Carvoeiro (Portugal), 21–23 January 2008: 38–42.

  9. Dubois, A. (2010a) Contributions to the discussion on electronic publication IV. (6) Registration as a fourth floor of the nomenclatural process. Bulletin of zoological Nomenclature, 67 (1): 11–23.

  10. Dubois, A. (2010b) Retroactive changes should be introduced in the Code only with great care: problems related to the spellings of nomina. Zootaxa, 2426: 1–42. <>.

  11. Dubois, A. (2013) Zygoidy, a new nomenclatural concept. Bionomina, 6: 1–25. <>.

  12. Dubois, A. (2020) The status regarding publication date and availability of taxonomic works published online without proper Zoobank preregistration. Bionomina, 18: 44–55. <>.

  13. Dubois, A. & Aescht, E. (ed.) (2017) LZS Session 13. Proposal AVA-04. Problems with the 2012 Amendment of the Code. Dumerilia, 7: 35‒47.

  14. Dubois, A., Bauer, A. M., Ceríaco, L. M. P., Dusoulier, F., Frétey, T., Löbl, I., Lorvelec, O., Ohler, A., Stopiglia, R. & Aescht, E. (2019) The Linz Zoocode project: a set of new proposals regarding the terminology, the Principles and Rules of zoological nomenclature. First report of activities (2014‒2019). Bionomina, 17: 1‒111. <>.

  15. Dubois, A., Crochet, P.-A., Dickinson, E. C., Nemésio, A., Aescht, E., Bauer, A. M., Blagoderov, V., Bour, R., Carvalho, M. R. de, Desutter-Grandcolas, L., Frétey, T., Jäger, P., Koyamba, V., Lavilla, E. O., Löbl, I., Louchart, A., Malécot, V., Schatz, H. & Ohler, A. (2013) Nomenclatural and taxonomic problems related to the electronic publication of new nomina and nomenclatural acts in zoology, with brief comments on optical discs and on the situation in botany. Zootaxa, 3735 (1): 1–94. <>.

  16. Frétey, T. & Dubois, A. (2021) It is high time that taxonomists follow the Code. 2. The Virgotyphlops case (Serpentes, Typhlopidae). Bionomina, 21: 117‒119. <>.

  17. Hourcade, J. C., Laloë, F. & Spitz, E. (2010) Longévité de l’information numérique. Les données que nous voulons garder vont-elles s’effacer? Les Ulis, France (EDP Sciences): 1‒106.

  18. LaBarca, J. E. (2010) Image storage and permanence considerations in the long-term preservation of photographic images – update 2010. Journal of Physics, (Conference Series), 231, 012008. <>.

  19. Santiago-Blay, J. A. (2004) Some aspects of the biology of the Aulacoscelinae (Chrysomelidae), with a description of three new species. In: P. Jolivet, J. A. Santiago-Blay & M. Schmitt (ed.), New developments in the biology of the Chrysomelidae, The Hague (SPB Academic Publishing bv), CD-Rom: 1‒551.

  20. Simpson, G. G. (1940) Types in modern taxonomy. American Journal of Science, 238: 413–431. <>.