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Ischyja
hemiphaea Hampson
Potamophora
hemiphaea Hampson, 1926, Descr. Gen. Spec. Noctuinae,
p. 93.
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Ischyja
hemiphaea |
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Ischyja
hemiphaea  |
Diagnosis.
This and the next species are generally similar in the division of the forewing
into dark basal and paler distal halves by an oblique boundary. Only the
reniform and orbicular are conspicuously paler in the darker basal half; they
are only apparent in the male in hemiphaea, where the reniform is a rounded
kidney-shape. The loop on the dorsum tends to be relatively narrow and is darker
amid a more ochreous variegation. The marginal zone has an irregular darker zone
centrally, and the paler basal zone contains three dentate marks that surround
an expansion into it of the purplish longitudinal paler streak that runs through
the basal half along vein CuA1.
Taxonomic
note. I. copicolor Prout
(S. Moluccas) may merely be a race of hemiphaea.
Geographical
range. India,
Andamans, Thailand (VK), Singapore, Sumatra, Borneo, Sulawesi.
Habitat
preference. The species is more frequent in the lowlands but has been
recorded up to 1780m on G. Mulu. Chey (1994) found it to be much commoner than
other Ischyja in softwood plantations in the lowlands of Sabah.
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