7-8mm. The male antennae are fasciculate. The wings are very pale brown, the
forewings with darker markings and somewhat similar to those of the last few
species of Manoba discussed on pp. 42-45. There is some submarginal
shading and an oblique, fine, rather punctate postmedial. Basal to this are four
(sometimes five) black dots, three approximately in a row in the cell, and the
third defining an equilateral triangle with the more basal pair of these. The
male abdomen has rather closely associated apodemes with venulae on the eighth
tergite as in N. semidolosa, but they are also developed in this manner
on the sternite. Uniquely within the genus there is a lateral pair of coremata
associated with the sixth tergite. The genitalia have the valves only shallowly
cleft and invested with a variety of modified scales. The harpe is short,
directed distally. The aedeagus vesica has a prominent, reflexed cornutus and a
triangular patch of sclerotisation. The male abdomen indicates some affinity
van Eecke (Java) in the form of the structures of the eighth segment, presence
of lateral coremata at the basal part of the fifth and sixth segments, and
comparable valve modifications. A distinctive feature of bimaculata is
the presence of prominent hair pencils at the ventral end of the tegumen on each
SARAWAK: Gunong Mulu Nat. Park, R.G.S. Exped. 1977-8 (J.D.Holloway et al.),
Site 27, April, G. Api, 1500m., Pandanus Camp, 429541, scrub, Pandanus,
BM noctuid slide 17105.
as holotype; 2
general data as holotype but Site 26, April, G. Api Pinnacles, 1200m. 428545,
open scrub; 1
general data as holotype but Site 14, February, Camp 2.5, Mulu, 1000m. 413461,
lower montane forest; 1
(slide 17631) SABAH: 1500m, Mt. Kinabalu, Kundasang, Perkasa Hotel, 22.v.1989,
logged montane forest (K.R. Tuck).
Geographical range. Borneo.
Habitat preference. All material is from montane forest and more open
vegetation, most from the limestone G. Api.
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