Cossus rufipecten sp. n.
The species is somewhat larger than vandeldeni but generally very
similar. The antennae of the male are pale orange and more broadly and more
extensively bipectinate than in vandeldeni where they are brownish. The
head and thorax are also extensively pale orange. In the male genitalia the
basal spine of the valve is more elongate with less even curvature, and the valve
itself is longer with a diagnostically rounded apex.
Sumatran males have rufous patches in the medial zone
of the forewing, just posterior to the disc, but these are obscure in the rather
more worn Bornean specimens.
SARAWAK: Gunong Mulu Nat. Park, R.G.S. Exped. 1977-8 (J.D. Holloway et al.) Site
8, February, Camp 1, Mulu 150m, 385470, mixed
dipt. for., BM cossid slide 84.
Paratypes: 1 as
holotype; 1 same
general data as holotype but Site 14, February, Camp 2.5, Mulu, 1000m 413461,
(lower montane forest) BM cossid
Geographical range. Borneo, Sumatra.
Habitat preference. The species has been taken in lowland and lower
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