Hemming (1967) stated:-
Prior to the establishment in 1937 of the relative dates of publication of Hübner's works, the general practice was to treat the Verz. bekannt. Schmett. as having been published in 1816 and therefore as having priority over the Zuträge. It was on this basis that in 1868 (Cat. diurn. Lep. Satyridae Brit. Mus. : 35) Butler selected Oreas helicta Hübner,  (Samml. exot. Schmett., 1; pl., ) to be the type-species of the genus Neonympha. When the dates of Hübner's work were ascertained, it was found that, whereas (as has always been known) the text of volume 1 of the Zuträge was published in 1818, the portion (signature 5 : 65) of the Verz. containing the name Neonympha was not published until 1819. It was seen therefore that it was in th Zuträge that the name Neonympha was first published. As noted by myself in 1937 (loc. cit. : 150) Oreas helicta Hübner was not included in this genus Neonympha in the Zuträge. Its selection as type-species by Butler in 1868 was therefore invalid. Luckily in the Zuträge Hübner included in Neonympha the closely allied Papilio areolatus Smith, 1797, which I thereupon selected as type-species, thus avoiding any material change in the taxonomic interpretation of this genus.
Cowan (1970: 52) stated:-
NEONYMPHA Hübner, 1818, Zutr. z. Samml. exot. Schm. 1 : 8. Type-species by designation by Butler,  (Cat. Sat. in. the B.M. : 35) : Oreas helicta Hübner,, Samml. exot. Schm. 1 : pl. .
Butler's designation was "Neonympha (helicta) phocion". By citing helicta (an included species of Hübner's) as a synonym of phocion (not included), he validly designated the former under Article 69a (iv.) Hübner's originally included species of 1818 were N. gemma Hübner, 1818 and O. helicta Hübner, , with Papilio areolatus Smith, 1797 cited as synonym of the latter. A further synonym of the second species is Papilio phocion Fabricius, 1793, an invalid junior homonym. Papilio areolatus is subjectively the valid name for the type-species." [This replaces the type-species - by selection by Hemming (1937, Proc. R. ent. Soc. Lond. (B) 6 : `150) : Papilio areolatus Smith, 1797, in Abbot, Ins. Georgia 1 : 25, pl. 13, (given in Hemming 1967, p.309)].
The higher classification used here follows Lamas (2008).
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