Pisara opalina Walker, 1862, J. Linn. Soc. (Zool.), 6: 118.
Hampson, 1894, Fauna Br. India, Moths, 2: 139.
Diagnosis. See the previous species. The forewing postmedial is a more
clearly defined irregular black line, not a zig-zag as in canioralis. The
more basal fasciation is evenly developed, and the postmedial is less stepped.
The wing is usually darker grey basal to the medial, and the antemedial often
has a darker patch of raised scales at one-third from the costa. Opalescence is
moderate across the whole wing. The male genitalia are similar to those of
but with a much narrower harpe and a more acutely pointed saccus.
Geographical range. Borneo, Burma, Java, Philippines, New Guinea.
Habitat preference. A male and three females have been noted for Borneo. The
holotype female, collected by A.R. Wallace, is probably from a lowland locality.
A male and female are from about 600m in the foothills of G. Trus Madi and
another female is from 1000m in the lower montane zone of G. Mulu.
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