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Risoba
avola
Bethune-Baker
Risoba avola Bethune-Baker, 1906, Novit. zool., 13: 234.
Risoba avola
magna
Prout, 1922, Bull. Hill Mus. Witley, 1: 214.
Risoba ochracea
Prout, 1922, Bull. Hill Mus. Witley, 1: 214.
Risoba avola Bethune-Baker; Holloway, 1976: 22.
Diagnosis. This and the next species have similar greenish brown and white
forewings and dull, brown-bordered, pale yellow hindwings. There is some sexual
dimorphism in the forewing, males having a more distinct, oblique, very pale
yellow postmedial band, the female being somewhat more variegated in this area.
This dimorphism is less extreme in avola, particularly ssp. magna,
and both sexes are much more extensively and irregularly variegated than in
vialis. The male genitalia are very similar, vialis tending to have
more than one small triangular spine at the centre of the aedeagus as distinct
from one or none in avola.
Geographical range. New Guinea; S. Moluccas, Luzon, Borneo (ssp. magna
Prout).
Habitat preference. All records are from G. Kinabalu at 1690m (7) and 2600m
(2).
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