GENERIC NAMES OF BUTTERFLIES 143 



are in fact no more than the two sexes of a single species, namely Papilio egialea Cramer. 



The taxon represented by the nominal species Papilio egialea Cramer is currently treated 

 subjectively on taxonomic grounds as a subspecies of the taxon represented by the nominal 

 species Papilio aglaia Linnaeus, 1758 (Syst. Nat. (ed. 10) 1 : 465). 



DELONEURA Trimen, 1868, Trans, ent. Soc. Loud. 1868 : 81. Type-species by monotypy ; 

 Deloneura immaculata Trimen, 1868, ibid. 1868 : 83, pi. 5, fig. 4. 



DEORIS Moore, [1903], Lep. ind. 6:31. Type-species by original designation : Papilio 

 agetes Westwood, 1843, Arcana ent. 2 (14) : 2$, pi. 55, figs 1, 2 



DERAGENA Moore, 1883, Proc. zool. Soc. Loncl. 1883 : 27.2. Type-species by original designa- 

 tion : Euploea proserpina Butler, 1866, Proc. zool. Soc. Loud. 1866 : 300. 



The taxon represented by the nominal species Euploea proserpina is currently ti 

 subjectively on taxonomic grounds as .i sub il the taxon represented by the nominal 



species Danais eleutho Godart, [1824] (Ency. nieth. 9 (Ins.) (2) : 815). 



DERAMAS Distant, March [886, Ann. Mag. nat. Hist. (5) 17 (99) : 252. Type-species by 

 monotypy : Deramas livena Distant, March 1886, ibid. (5) 17 (99) : 252. 



Distant published the name Deramas for a second time sis months later in the sami 

 (September 1886, Rhop. malayana : 450). This second publication ol the name Deramas is 

 irrelevant from the present point of view, the type-species ol this genus having (as shown 

 above) been settled by monotypj when the name was originally published in March i> 



DERCAS Doubleday, [1847], Gen. diurn. Lep. (1) : 70. Type spei ies by monotypy : Colias 

 verhuelli Hoeven, 1839, Tijdschr. nat. geschied: physiol. 5 (4) : 341, pi. 8, tigs 3, 4. 



When discussing the genus Gonepteryx I >oubleday said that, if it wen- to be thought desirable 

 to subdivide that genus, various names were available, including the name Dereas, whi< h had 

 already been indicated by Boisduval for t olios verhuelli Hoeven. Doubleday's information 

 regarding the name Dereas must have been drawn from manuscript si inn es, 6 ir thai name had 

 not been published. 1 (oubleday must therefore be treated as its author ; as the above species 

 was alone cited by Doubleday, it is automatically the type-spei ies ol Dereas by monotypj 



DEROGENA Rebel, 1910, Denkschr. Akad. Wiss. Wien 85:416 (an [ncorrecl Subsequent 



Spelling ol Deragena Moore, i> 

 DESMOLYCAENA Trimen, 1898, Trans, ent. Soc. Loud. 1898 : 7. Type-species by original 



designation : Desmolycaena mazoensis Trimen, [898, ibid. 1898 : 7, 8, pi. 1, tig. 4 <J. 



DESMOZONA Boisduval, [1836], (Roret's Suite a Button), Hist. uat. his , Consul, ggn. Lepid. 



1 : pis 6 [ = pl. 2B], 21, [ pi. -L'. Type-species by selection by Hemming (1939, Proi R 



ent. Soc. Loud. (B) 8 : 135) : Desmozona acherois Boisduval, [836 , ibid., Consid. gen. 1 



Lepid. : pi. 21, fig. 1. 

 DEUDORIX Mewitson, [1863], ///. diurn. Lep., Lycaenidae 1 (text) : 16. Type-species by 



original designation : Dipsas epijarbas Moore, [857, in Horsfield & Moore, Cat. lep. Ins. 



Mus. East India Coy (1) : 32. 



DEUDORYX Hewitson, [1865], ///. diurn. Lep., Lycaenidae 1 (text) : 47 (an Incorrect Subse- 

 quent Spelling of Deudori.x 1 lew itson, [1863]). 



DIADEMA Boisduval, [1832], in d'UrviUe, Voy. "Astrolabe" , Faun. ent. 1 (Lep.) : 133. 

 Type-species by selection by Blanchard (1840, Hist. nat. his. 3 : 451) : Papilio bolina Lin- 

 naeus, 1758, Syst. Nat. (ed. 10) 1 : 479. 



This name is invalid under the Law of Homonymy, being a junior homonym of Diadema 

 Gray, 1825 (Ann. Phil. 26 : 426). Formerly, there were two older homonyms, namely 

 Diadema Schumacher, 1817, and Diadema Kanzani, 1817, but both of these were suppressed 

 by the Commission under its Plenary Powers in its Opinion 206 published in 1954, tne purpose 

 of that decision being to validate the Echinoderm name Diadema Gray referred to above. 



DIAETHRIA Billberg, 1820, Enum. Ins. Mus. Billb. : 78. Type-species by monotypy : 

 Papilio clymena Cramer, [1775], Uitl. Kapellen 1 (2) : 38, pi. 24, figs E, F. 



