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Byrsia aurantiaca Snellen 
Hypocrita? aurantiaca Snellen, 1886, Notes Leyden Mus., 8: 4.
Byrsia aurantiaca javana Rothschild & Jordan, 1901, Novit. zool., 8: 422.

Byrsia aurantiaca
(x 1.73)

See the generic description. The triangular shape of the forewing apical black and red zone is diagnostic.

Geographical range. Sundaland.

Habitat preference. Only one specimen has been taken in recent surveys, day-flying at 150m during the Mulu survey. Older material seen is from Kuching, Pontianak and Sandakan.

Biology. The larvae were described by Piepers & Snellen (1904). They are bright ochreous in ground colour, covered densely with white hairs. Over all except the head and anal portion, the body has a greenish tinge, with T3 and A7 being black dorsally and bearing several small, spiny verrucae. From T2 backwards, each segment has a transverse line of yellowish white. The larvae were stated to be found on the leaves of Mangifera (Anacardiaceae), but with no indication of what they actually fed on.

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