pour répondre à ta question il faut voir l'article 45 6 4 pour voir ce qu'il contient
edit: article en anglais
45.6.4. it is subspecific if first published before 1961 and its author expressly used one of the terms "variety" or "form" (including use of the terms "var.", "forma", "v." and "f."), unless its author also expressly gave it infrasubspecific rank, or the content of the work unambiguously reveals that the name was proposed for an infrasubspecific entity, in which case it is infrasubspecific [see also Art. 45.6.1]; except that
45.6.4.1. a name that is infrasubspecific under Article 45.6.4 is nevertheless deemed to be subspecific from its original publication if, before 1985, it was either adopted as the valid name of a species or subspecies or was treated as a senior homonym.
Examples. Spencer (1896) described and named Sminthopsis murina var. constricta, a small carnivorous marsupial, from a specimen which he considered morphologically intermediate between two congeneric species, Sminthopsis murina and S. crassicaudata; his work does not unambiguously reveal that the name was proposed for an infrasubspecific entity, and accordingly constricta has subspecific rank from its original publication.
In the Heteroptera, Westhoff (1884) explicitly gave the name Pyrrhocoris apterus var. pennata to a macropterous form as such, and Wagner (1947) explicitly gave the name Stenodema trispinosum f. pallescens to freshly emerged adults as such; the names pennata and pallescens are therefore of infrasubspecific rank, and since neither was adopted for a species or subspecies before 1985 they are both unavailable.
Polinski (1929) described a terrestrial gastropod Fruticicola unidentata subtecta as a "variété (natio) n.", 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 Polinski, 1929.
mais là mon anglais est très pauvre
