IIHOPALOCERA MALA YANA. 



Genus IDEOPSIS. 



Ideopsis, Horsf. & Moore, Cat. Lep. E.I.C., i., p. 133 (1857). 

 Dunais, Sect. 4, Doubl. Gen. Diurn. Lep., p. 90 (1847). 



Antennfe gradually but distinctly clavate. Wings semidiaphanous. Anterior wings lengthened, 

 subtriangular ; costal margin arched from base ; apex broad and rounded ; outer margin oblique and more 

 or less sinuate ; inner margm short and more or less concave ; costal uer\aire extending to more than 

 half its length ; subcostal with first nervulo emitted at some distance before end of cell and anastomosed 

 with costal nervure. Posterior wings elongate, more or less regularly obovate; costal margin oblique 

 and moderately straight; apex and anal angle rounded; costal nervure short; subcostal nervules not 

 widely separated and subequal in length. Claws of middle and posterior legs long and slightly cui-ved; 

 pulvilh absent or obsolete. Male without sexual mark or scent-gland to posterior wings. 



Larvif and pupa; apparently undescribed. 



About seven species of this genus are now known to exist, and its recorded area includes 

 the Malay Peninsula, extending throughout the Archipelago to Waigiou and Mysore Islands. 

 It has also been received from China. It is not found in Ceylon, and appears to be also 

 absent from the lepidopteral fauna of the Nicobar and Andaman Islands. One species only 

 is found in the Malay Peninsula. 



Snellen, in writing on Celebesian butterflies,* places one of the above seven species in 

 the genus Hcstia; the differential generic characters, however, here given, prevent my 

 following that author in so doing. 



1. Ideopsis daos. (Tab. I., figs. 3 ^ & 4 5 .) 



Idea Duos, Boisd., Spec. Geu. Lep., i., t. 24, fig. 3 (183G). 

 Hestia Kudoni, Gray, Lep. lus. Nep., p. 10, t. 9, f. 3 (1846). 

 Ideopsis Daos, Horsf. & Moore, Cat. Lep. E.I.C., i., p. 134 (1857). 

 Idea niardi, Voll., Tijd. Ent., iii., p. 44, t. 2, f. 4 (1860). 



Male. Wings semihyaliue and more or less pale fuliginous ; neuratiou dark fuscous. Anterior wings 

 above with the costal area black, and with the following black macular markings : — a broad irregular 

 patch at each subcostal nervule ; a large spot at end of cell ; a narrow streak at each diseoidal nervure 

 (sometimes coalescing) ; an oblique submarginal series of irregular spots, situated between the nervules, 

 the lower three largest, and a marginal series of large spots, placed on the nervules, those at apex 

 smallest ; between the marginal spots are faint longitudinal streaks, and a thickened streak on apex of 

 submedian nervure. Posterior wing with a large spot at apex of cell ; a discal series of six u-regular spots 

 between the nervules (that near submedian nervure somewhat indistinct), and a marginal row of 

 spots (at end of nervules these are somewhat obovate, and between which they are pj'riform). Head and 

 thorax above black, spotted and streaked with white ; abdomen pale fuscous, white beneath ; palpi 

 beneath, undersides of trochanters and femora white ; sternum black, spotted with white. Underside 

 of wings marked as above. 



Female. Differs from the male in having the anterior wings broader, and less deeply sinuate 

 externally. 



Exp. wings, J 88 to 104 millim. ; ? 92 to 112 millim. 



* Tijasclu-. Ent., sx.i., p. 5 (1878). 



