The genera of the tribe Charaxini (Papilionoidea, Nymphalidae, Charaxinae) Author Bouyer, Thierry text Metamorphosis 2023 2023-11-06 34 1 59 78 http://dx.doi.org/10.4314/met.v34i1.6 journal article 10.4314/met.v34i1.6 2307-5031 14119408 0F510750-563D-4E6D-BE9F-F901EE02A422 Genus Ydeali gen. nov. urn:lsid:zoobank.org:act: 74F27831-5FFB-40C7-AEF9-B434436747C1 Type species of the genus: Charaxes lydiae Holland , 1917. Derivatio nominis . Ydeali is the anagram of the specific name lydiae , the type species of the new genus, also suggesting the word “ideal”. Monospecific genus corresponding to Charaxes lydiae , a very characteristic white, black and orange tricolour species, mimetic of the partially diurnal genus of Lymantriinae Otroeda Walker, 1854 and the female of Cymothoe beckeri (Herrich-Schäffer, 1858) , in whose company it flies. Note also the great chromatic similarity between the underside of lydiae and Charaxes superbus , two very localized and sympatric Charaxini . Figure 10 – Comparison of the length of sawteeth (represented by a green bar) to width the length of the scale rows (represented by a red bar), character 1 in the genera key. Y. lydiae was attached to the “ nobilis -group” by Henning (1989: 208) although Plantrou (1983: 178-179 , 257) distinguished it by its very particular genital armature. It was not included in Aduse-Poku et al. (2009) . Lévêque & Pierre (2017) demonstrated that this species is quite special, probably related to the Euxanthe . The barcode (public data, see Fig. 20 ) shows that lydiae forms a distinctly individualized cluster which is close to a cluster containing Viridixes (and incidentally Euxanthe ). The hindwing is basically white with a large orange patch in the tornus and a black marginal band composed of black interveinal discs. Each of these discs is adorned with a central white spot, limited proximally by a more or less present bluish line, itself limited by a black border, and bordered on the outside by a white internervural bar pinched in its centre (like a long bone, arranged along the outer edge of the wing). The genus contains only one species, Ydeali lydiae ( Holland , 1917) comb. nov.