Arctornis ardea sp.
14-15mm. The wings are satiny white with a small
discal spot on the forewing. The fringes and forewing costa are tinged brown.
The frons has a broad rufous-brown bar between the antennal bases and upper part
of the eyes. The palps are ochreous, and the legs are spotted with dark brown.
The uncus is rounded and the aedeagus has two ‘horns’ as in hipparia, but
the valve is completely different. It is deep, rectangular, the distal angles
rounded off and invested with long setae, those of the ventral angle more
robust. The harpe is very slender, with a slightly bulbous apex grading into a
slender spine, the whole resembling the neck and head of a heron.
Holotype . SARAWAK: Gunung Mulu Nat.
Park, R.G.S. Exped. 1977-8 (J.D. Holloway et al.) Site 15, February,
Camp 2.5, Mulu, 1000m, 413461, lower montane forest, BM lymantriid slide 1639.
(slide 1640) as
holotype; 1as holotype but Site 14; 1general data as
holotype but Site 13, Camp 2, Mulu, 500m, 401464, mixed dipt. for.
Geographical range. Borneo, Sumatra (Schintlmeister, MS).
Habitat preference. All material was taken on the transect of G. Mulu in
lower montane forest or the upper zone of hill dipterocarp forest.
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