Hemming (1967) stated:-
This generic name was introduced as a replacement for Pteroxys Watson, 1893, which is invalid under the Law of Homonymy.
As noted above, the present generic name was published in two Original Spellings : first, in the main description (: 419) the concluding portion of the name appeared in the spelling "-oetus" ; second, in the ensuing discussion (: 422) that portion of the name appeared in the spelling "-aetus". This variation in spelling, no doubt due to the unfortunate use of digraphs (diphthongs) would not have occurred if the letters of which the name is composed had been printed separately. Article 32 (b) of the Code provides that, when a name is originally published in two or more spellings, the spelling to be accepted as the Correct Original Spelling shall be determined by the First Reviser. In the present case the "-oetus" spelling has been used in all the subsequent primary literature (from Elwes & Edwards, 1897 (Trans. zool. Soc. Lond. 14 (4) : 104) onwards), except by Evans (1927) who, as already shown, used the "-aetus" spelling, further misspelling this name by omitting the letter "h" after the letter "p" at the end of the preceding syllable, the name appearing in the strange form "Orthopaetus". The question of the treatment to be accorded to variant original spellings was first dealt with in 1953 by the Zoological Congress held at Copenhagen (1953, Copenhagen Decisions on Zoological Nomenclature : 44, paragraph 71 (1) (b) (iii)) the Congress directing that in such a case the spelling there termed the "Valid Original Spelling" shall be the spelling "employed by the First Subsequent User". When this decision was incorporated in the revised Code - as Article 32 (b), the "First Reviser" was substituted for the "First Subsequent User". It is not clear whether this change in the wording of this provision was made for the purpose of tightening-up the Copenhagen decision or whether it was made merely with the object of bringing the language used more into line with that employed in somewhat similar provisions elsewhere in the Code. If Article 32 is to be read as having the same meaning as the Copenhagen decision quoted here, then the "-oetus" spelling became the Correct Original Spelling when it was adopted in 1897 by Elwes & Edwards in their capacity as the First Subsequent User. If however the provision in Article 32 regarding the role of the First Reviser in such cases is to be rigidly construed, the position is that this generic name is without a definitely determined Correct Original Spelling. To overcome this difficulty I now select the "-oetus" spelling to be the Correct Original Spelling, at the same time rejecting the "-aetus" spelling as an Incorrect Original Spelling.
The higher classification used here follows Lamas (2008).
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Search the Biodiversity Heritage Library (BHL) for references to ORTHOPHOETUS and included species.
Orthopaetus ; Evans, 1927: 197, 211, 296.
Orthophaetus ; Watson, 1895: 422.
Pteroxys Watson, 1893: 18 (key), 29.