Corymica arnearia Walker, 1860, List Specimens lepid. Insects
Colln Br. Mus. 20: 231.
of Corymica arnearia
Diagnosis. This and the next species appear very similar from the upperside but arnearia
tends to have a more clearly marked medial bar on the forewing dorsum, pale,
red edged as distinct from diffusely red, and a corresponding narrow mark on the
costa that is absent in vesicularia. The red marginal mark on the
forewing underside is usually much broader in arnearia, quadrate, rather
than dentate to triangular. In the male genitalia arnearia has the apex
of the valve distinctly hooked at the costa and has a distinctive central
pucker. The valve in vesicularia is simple, elliptical. The aedeagus is
stout in arnearia, with a scobinate lateral lobe to the vesica, rather
than very slender.
Geographical range. Japan, Oriental tropics to Sulawesi.
Habitat preference. The species was described from Borneo, and there is a
further specimen from Sarawak; all Bornean material was collected by A.R.
Wallace, probably from lowland localities.
Biology. The species has been reared in Hong Kong by M.J. Bascombe (pers.
comm.). The larva (above) is bright green with a paler, yellower venter.
The head is brown with a pair of black stripes and dorsal white rings.
The host-plant was Cinnamomum camphora (Lauraceae). The resting
posture of the adult is typical of the genus.
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