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Arctornis hipparia Swinhoe
stat. rev. & comb. n.
Leucoma
hipparia Swinhoe,
1893, Ann. Mag. nat. Hist. (6), 12: 213.
Arctornis hipparia 
(holotype) |
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Diagnosis. The wings are satiny white, with the reflective scales rather coarse.
The fringes are narrowly brownish. The frons is reddish, grading paler
ventrally, and the palps are tipped ochreous. The legs are only faintly spotted.
The male genitalia have the uncus apex broad, flatly rounded, the margin
somewhat sclerotised. The dorsal distal angle of the valve is produced, acute.
The harpe is robust, swollen at one third, thence tapering and curving down to a
narrow but blunt apex. The harpe is evenly scobinate ventrally over the swollen
portion and over all the tapering portion. The aedeagus has prominent lateral
‘horns’. The holotype from Singapore has a small discal dot on the forewing.
Geographical range. Singapore, Sumatra (Schintlmeister, MS), Borneo.
Habitat preference. The species is montane, taken severally at 900m on G.
Api and 1000m on G. Mulu during the Mulu survey, with a further singleton from
1618m on Bukit Retak, Brunei. However, its occurrence in Singapore suggests it
may also be encountered in the lowlands.
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