Thalera albipsarsa Walker,
1861, List Specimens lepid. Insects Colln Br. Mus. 22: 600.
Diagnosis. Males of this and the next species have the basal half of the
hindwing suffused with white. In females this suffusion is restricted to the
zone distal to the hindwing post medial. The two species are distinguished most
reliably on genitalic features though Holloway (1982) noted that males of E.
rufimargo Warren have a conspicuous double white spot just posterior to the
forewing discal patch. In albisparsa the male has coremata on the valve,
absent in rufimargo. The valve costal processes differ as illustrated.
The projections of the eighth sternite are shorter, stouter in albisparsa. In
the females a basal sclerotisation of the bursa is ventral in albisparsa, left-lateral
in rufimargo. There is an additional central pouch on the margin of the
seventh sternite in rufimargo in addition to the lateral pair (Holloway,
Taxonomic notes. Holloway (1982: 246) reviewed the taxa allied to E. divapala Walker
comb. n. (Sri Lanka, S. India), recognising this and the next species as
Geographical range. S. India, N.E. Himalaya, Sundaland, Sulawesi.
Habitat preference. Most material seen is from lower montane forest, e.g. at 1000m on
G. Mulu and 900m on G. Api during the Mulu survey, but the species also occurs
at much lower frequency in lowland forest.
Biology. Moore (1884-7) illustrated the larva of the related E. divapala Walker
from Sri Lanka. The dorsolateral flanges are evenly developed on the thoracic
and abdominal segments. The colour is olive green but the thoracic segments and
posterior segments from A6 back are purplish brown. The pupa is greenish,
speckled purplish brown.
The host-plant given was
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