REVISION OF GENUS ZAMARADA 197 



The LABIFERA -Group 



The group is distinctively patterned in greyish yellow, brown and black with 

 large, ovate discal spots and exceptionally long antennal pectinations in the male, 

 measuring 17-18 X the diameter of the shaft. 



Characterized in the male genitalia by the long, bluntly tipped uncus, one-fourth 

 as long as the aedeagus, and by the form of the bifurcate valve, the apex of the 

 dorsal margin being produced in lobate form, that of the ventral margin being 

 produced and tapered. Arms of gnathus slender and fused medially, but without 

 forming a ventral plate. Apical half of aedeagus blade-like and tapered, one-half 

 of width of basal half. Apex of fulcrum a little broadened, spatulate and bearing 

 a cluster of 9-12 stout spines. Vesica without cornutus. 



The male hind tibia is similar to that found in the metrioscaphes-group. 



Key to Subspecies 



1 o". Valve bifurcate; ratio of greatest width of lobate extension of dorsal 



margin to its length from point of cleavage 3:7. $. Sclerotized transverse 

 ridge on eighth sternum equal in width to sclerotized posterior part of corpus 

 bursae. ........ labifera labifera (p. 198) 



O*. Ratio of greatest width of lobate extension of dorsal margin to its 

 length from point of cleavage 5:7. $. Sclerotized transverse ridge on 

 eighth sternum one and one-half times as wide as sclerotized posterior part 

 of corpus bursae ...... labifera discata (p. 198) 



Zamarada labifera Prout 

 (Text-figs 326-328; PI. 70, figs 730-733; PI- US, figs 1037. I0 38) 



Zamarada labifera Prout, 1915 : 342. 



0*$ (PI. 115, figs 1037, 1038). Hyaline area of wings lightly striate with brown and finely 

 edged distally with light brown and then silvery grey; costa of fore wing light buff sparsely 

 irrorate with brown; discal spots large and ovate, that on fore wing buff outlined with light 

 brown, that on hind wing silvery grey outlined with dark brown. Non-hyaline terminal 

 area of each wing greyish yellow; dentate subterminal fascia glossy light buff; fore wing 

 suffused with light brown proximad of subterminal fascia and striate and suffused with black, 

 as illustrated; the black striation and suffusion is strongly marked in the male, weakly marked 

 in the female. Underside of non-hyaline terminal area dark brown proximally, buff distally; 

 the dark brown extends to the termen in the discal and tornal areas of the fore wing. 



0* genitalia (Text-figs 326-328). Valve bifurcate; apex of ventral margin tapered, that of 

 dorsal margin lobate; dorsal process with a triangular, setose projection near base. 



9 genitalia (PI. 70, figs 730-733). Lamella antevaginalis asymmetrical with a strongly 

 developed, triangular plate at right side and a small one at left side. Corpus bursae sclerotized 

 in posterior fourth. Eighth sternum with transverse sclerotized ridge medially, fused with 

 sterigma. 



Measurements. Fore wing: $ 18-20 mm, $ 16-19 mm. Antennal pectinations: ^ 17-18 

 X, $ 5 - o-6'5 X diameter of shaft. 



Distinct in colour and pattern and in the exceptionally long pectinations of 

 the male antennae. 



