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Spilosoma thomasi sp. n.  
Spilosoma procedra Swinhoe sensu Holloway, 1976: 4.

Spilosoma thomasi (paratype)

18-20mm (G. Api), 22-23mm (Kinabalu). The facies is similar to that of hosei except the hindwings are a brighter yellow, contrasting with the forewing, and the tornal black markings are somewhat narrower, particularly that posterior to vein CuA2. The male genitalia are very different, with a broad, quadrate base to the valve, terminating in a tapering, finger-like process. The species is named for Dr W. Thomas in appreciation of his assistance with the Spilosoma group.

Holotype SARAWAK: Gunong Mulu Nat. Park. RGS Exped, 1977-8 (J.D. Holloway et al.) BM 1978-206, site 25, April, G. Api 900m 427550 lower montane forest, BM arctiid slide 4103.

Paratypes.2as holotype; Kinabalu specimens are excluded as they may represent a distinct race.

Geographical range. Borneo.

Habitat preference. The species is montane, recorded from G. Kinabalu (1500-1930m) and the limestone G. Api (900-1700m).

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