Orothalassodes glabrosa sp.n
17-21mm. This species can be distinguished from floccosa
by the absence of long scales on the hindlegs. The buff zone on the
underside of the hindwing dorsum is slightly more intensive. There are distinct
differences in the male genitalia, indicating a relationship of both to O.
simplex Warren. O. simplex has the eighth sternite more deeply and
narrowly cleft, with a more marked process at the base of the valve costa. O.
glabrosa has the eighth sternite only very shallowly excavate: there are no
processes at the base of the valve costa, and the vinculum is less elongate than
in either of the other two species.
Gunung Mulu Nat. Park, R.G.S Exped. 1977-8 (J.D. Holloway et al.) Site 3,
January, Camp 4, Mulu, 1780m, 453463, [upper] montane forest,
BM geometrid slide 16747.
Paratypes: 1 general
data as holotype but Site 2; 1 BRUNEI: 1618m. Bukit Retak, montane forest,
14.9.79 (Lt. Col. M.G. Allen) slide 16746; 1 BRUNEI: 1670m,
Bukit Pagon, montane forest, Feb 1982 (Allen & Harman), slide 8687.
Geographical range. Borneo.
Habitat preference. The species is common in upper montane
forest. On G. Kinabalu it ranges from 1200m to as high as 2600m.
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