drawing by John O. Westwood, listed as Synemon graciosa
A monograph of the Lepidopterous genus Castnia and some allied groups,
Transactions of the Linnean Society of London, 2nd Series (Zoology),
Volume 1 (1877), Plate XXXIII, fig. 13,
image courtesy of Biodiversity Heritage Library, digitized by Ernst Mayr Library, Harvard University.

The adult moth of this species has pale grey-brown forewings each with substantial dark brown markings. The hindwings are scarlet, each with variable dark brown markings, including dark brown margins sometimes containing a submarginal arc of pale spots. The wingspan is about 3 cms.

The species has been found in

Further reading :

John O. Westwood,
A monograph of the Lepidopterous genus Castnia and some allied groups,
Transactions of the Linnean Society of London, 2nd Series (Zoology),
Volume 1 (1877), p. 198, and also Plate 33, fig. 13.

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(written 24 August 2018)