SUBFAMILY HYPENINAE
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Dichromia quadralis Walker
     Dichromia quadralis Walker, [1859] 1858, List Specimens lepid. Insects Colln Br. Mus., 16: 14.
    Dichromia quadralis Walker; Holloway, 1976: 40.
 

Dichromia quadralis
Figure 438


Diagnosis.
The forewings have a Hypena-like pattern, contrasted in black and cream. The hindwings are even more distinctive, being yellow with a broad, blackish brown apical area as illustrated.

Geographical range. India, Andamans, Nicobars, Peninsular Malaysia, Borneo, Philippines.

Habitat preference. The only Bornean specimen seen is from 1500m in tall montane forest on G. Kinabalu.

Biology. Sevastopulo (1946, 1947) described the larva in India, and there is also dried material in BMNH from these records. The prolegs on A3 are vestigial but the rest are fully developed. The segments are well defined, each centrally expanded. The primary setae are on black chalazae. The head is yellow and the body is dark green. There is a weak dorsal black band and stronger, broader lateral ones, these latter being edged yellowish. The larvae are generally suffused blackish to a very variable extent, particularly over the bulge in each segment. In some larvae the black becomes predominant.

Pupation is in a leaf folded round and secured with silk.

These descriptions were of fully grown larvae with no hosts established, but Sevastopulo (1949) later recorded Boehmeria (Urticaceae) for the species.

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