48 A. WATSON 



Thorax and abdomen similar in colour to adjacent surface of wing. Upper surface of wings 

 pale buff in manleyi, yellowish white in acuminata and grey or brownish grey in remaining 

 species. i?i in fore wing arises from areole in prunicolor, from near end of cell in rest of genus ; 

 Rs arises from areole. Antemedial fascia of fore wing absent only in leucosticta, postmedial 

 fascia oblique, strongly marked ; subterminal fasciae absent in violacea, broad and diffusely 

 marked in robusta, narrow and weakly marked in rest of genus. Sc + i?i approximates to Rs 

 distal to end of cell in hind wing. Antemedial fascia and strongly marked postmedial fascia 

 present on hind wing except in robusta ; weakly marked subterminal fascia present. Under 

 surface of wings dull white in acuminata, pale brownish yellow in manleyi, buff in robusta, and 

 yellow, brownish grey or neutral grey in remaining species. Under surface of both wings 

 unmarked in robusta ; with postmedial and subterminal fasciae in manleyi and acuminata, 

 but with only diffusely marked postmedial fascia in the other five species. Mid tibia with one 

 pair of spurs in violacea, but with two pairs in rest of genus. Hind tibia with two pairs of spurs. 



o* genitalia : saccus with medial dorsal process in rectilinea and rugosa and with long lateral 

 processes in flavilinea ; valve small, with processes at base ; socius simple or with processes ; 

 diaphragma with medial sclerotization, best developed in flavilinea ; uncus bifurcate in manleyi 

 and acuminata, absent in violacea, bifid in rest of genus ; aedeagus variously shaped and 

 ornamented ; seventh abdominal sternite with two lateral anterior apodemes in violacea, 

 otherwise with single medial apodeme ; eighth tergite truncate or concave posteriorly ; eighth 

 sternite variously shaped, with lateral sclerite on either side in violacea and robusta and with 

 pair of long eversible setose sacs in violacea. 



9- As for male but with apex of fore wing slightly more strongly produced, and antennae 

 very weakly biserrate or uniserrate except in leucosticta which has weakly bipectinate antennae. 



$ genitalia : signum an elongate band in robusta, absent in manleyi, flavilinea, cupreogrisea 

 and leucosticta, ovate in remaining species ; eighth and ninth segments variously sclerotized, 

 without processes. 



Included in this revision are manleyi and acuminata, listed by Inoue (1962) ; 

 prunicolor, flavilinea, leucosticta and violacea, transferred from Albara Walker ; 

 robusta, transferred from Drepana Schrank, cupreogrisea transferred from Micro- 

 blepsis ; and two new species, rectilinea and rugosa. The classification of violacea 

 and, in particular, robusta in Betalbara is tentative, but I believe that there are 

 sufficient similarities between them and the rest of the genus to justify their inclusion. 



Betalbara is probably most closely related to Albara. It can be distinguished 

 externally from Albara by the continuous subterminal fascia on the fore and hind 

 wing, or by its absence, whereas in Albara this fascia is represented by a series of 

 spots. In the male genitalia the uncus is not massive and bifid as in Albara, and 

 the seventh sternite is symmetrical in contrast with the strongly asymetric seventh 

 sternite of Albara. The females of Betalbara lack the flattened, paired, dorsal lobes 

 of the ninth segment found in Albara. The species of Pseudalbara differ in the 

 presence of a vestigial frenulum in the male and the absence of pattern on the upper 

 surface of the hind wing. 



Distribution. N. India {prunicolor, rugosa, leucosticta, cupreogrisea, violacea) ; 

 Sikkim [prunicolor, leucosticta) ; Burma (prunicolor, cupreogrisea) ; China (manleyi, 

 acuminata, prunicolor , leucosticta, flavilinea, rectilinea, violacea, robusta) ; Formosa 

 (violacea) ; Japan (manleyi, acuminata) ; Malaya (leucosticta, rugosa). Six species 

 are Indo-Chinese endemics, two are shared between the Indo-Chinese and Malayan 

 Subregions and two between the Indo-Chinese and Manchurian Subregions (see 

 Table 1). 



