The Christmas Island Bollworm was described in 1912 based on one male and four female specimens.

The species reached a wingspan of about 1,8 cm; the head and the thorax were yellowish green, the palpi were chocolate-brown and whitish at their base, the legs were chocolate-brown as well, the forewings were yellowish green with the costal edge being pale pinkish, each wing had a small chocolate-brown discoidal spot, the hindwings were whitish brown.

The Christmas Island Bollworm was originally considered common towards the end of the rainy season; however, the species has not seen since the 1930s and is now most likely extinct. [1][2]

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References:

[1] H. M. Pendlebury: Lepidoptera (Heterocera). Bulletin of the Raffles Museum 18: 58-73. 1947
[2] John Woinarski: A Bat’s End: The Christmas Island Pipistrelle and Extinction in Australia. CSIRO Publishing, Victoria, Australia 2018

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Depiction from: ‘George Francis Hampson: Catalogue of the Lepidoptera Phalaenae in the British Museum. London: printed by order of the Trustees 1898-1920’

(public domain)

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edited: 09.09.2020