66 D. S. FLETCHER 



Distinguished from externally similar species by the structure of the genitalia of 

 both sexes. In the male the form of the dorsal process of the valve and the coarse 

 scobination and stout terminal spine on the apical third of the aedeagus and in the 

 female the form of the sterigma are diagnostic. 



Distribution. Borneo. 



Material examined. 



Comibaena scriptifasciata Walker, holotype $ [not <$ as stated in original 

 description], without abdomen, Borneo (Sarawak): {Wallace), in BMNH. 



Borneo: Sarawak, Bidi [on Sarawak River], 1907-1908 (C. /. Brooks), 1 <J; 

 Sabah (Pryer), 2 $; Sandakan (D. Cator), 1 J. 



Zamarada baliata (Felder) sp. rev. 

 (Text-figs 81-84; PL 19, figs 525, 526; PI. 100, fig. 892) 



Euchloris baliata Felder, 1875 : 9, pi. 127, fig. 7. Holotype <§, Java (BMNH) [examined]. 

 Zamarada translucida Moore, 1887 : 432. LECTOTYPE g, ?Borneo, ?Java (BMNH), 



here designated [examined]. 

 Zamarada translucida Moore; Hampson, 1896 : 552. 



$ genitalia (Text-figs 81-84). Dorsal process of valve a little dilate in basal third, apical 

 half evenly curved to finely tapered tip. Aedeagus with two short, serrate ridges in apical 

 third; apex with minute, hook-like projection. Cornutus short and broad with a smooth-edged 

 thorn-like tip in specimens from Java and Malaya (Text-fig. 82) ; cornutus slender and as long 

 as width of aedeagus and with minutely scobinate lateral margins in specimens from Sumatra 

 and Borneo (Text-fig. 84). 



Cj genitalia (PI. 19, figs 525, 526). Sterigma with three processes extending posteriorly; 

 medial process, from lamella postvaginalis, short and broadly rounded; longer lateral processes, 

 from lamella antevaginalis, serrate at apices. Posterior half of corpus bursae sclerotized and 

 ribbed; remainder membranous with a stellate signum. 



Measurements. Fore wing: $ 14-15 mm; $ 13-15 mm. Antennal pectinations: ^ 14 x, 

 $ 6 X diameter of shaft. 



Externally (PI. 100, fig. 892) closely similar to scriptifasciata, with which it 

 evidently occurs at Bidi in Sarawak. Examples of baliata from the island of 

 Borneo and some from Sumatra differ from scriptifasciata in having the dentate 

 subterminal fascia irrorate with orange-brown, but this is not a constant character 

 for the species. Distinguished in the male genitalia by the non-excavate dorsal 

 process on the valve, by the less coarsely scobinate ridges on the aedeagus and by the 

 smaller cornutus on the vesica. In the female genitalia the medial process on the 

 sterigma is shorter and not semi-cylindrical in section and the corpus bursae is 

 more slender and more extensively sclerotized and ribbed. 



The genitalia of both sexes appear to vary geographically. The males from 

 Perak are identical with those from Java (Text-figs 81, 82); in examples from 

 western Sumatra, the medial third of the dorsal process of the valve is straight, 

 with the suggestion of an angle rather than a curve at two-thirds, and the cornutus 

 is as long as the width of the aedeagus with minutely serrate edges (Text-figs 83, 





