submontana sp. n.
10-11mm. Both forewings and
hindwings are grey, the latter paler with a pale yellowish tinge, particularly
at the margin. The double discal dot and the course of the fasciae are much as
in the previous two species, the postmedial having the characteristic angle at
one-third from the dorsum, but the fasciae are much more linear and very fine.
There is also some diffuse longitudinal variegation in the grey ground colour.
The male antennae are bipectinate as in obliquipuncta and obliqualis van
Eecke (Sumatra). The latter has a more variegated forewing, and the fasciae are
broader, more diffuse. The male genitalia show some features in common with obliqualis
such as presence of a moderate saccus, a transtilla-like structure with two
central lobes (larger in submontana) and a setose process from the
valve sacculus (again much larger in submontana). The valve apices
are incurved in both species, but are narrower in submontana, more
pointed and with rugosities exteriorly. The aedeagus vesica lacks the two
cornuti seen in obliqualis.
Holotype . SARAWAK:
Gunong Mulu Nat. Park, R.G.S. Exped. 1977-8 (J.D. Holloway et al.), Site
14, February, Camp 2.5, Mulu, 1000m. 413461, lower montane for., BM arctiid
holotype; 4, 1 as holotype but Site 15; 1 as holotype but Site 24, April,
W. Melinau Gorge, 270m. 430558, FEG 4, limestone forest; 5 as holotype but Site
25, April, G. Api, 900m. 427550, lower montane forest; 1
SABAH: Mt. Kinabalu, Mesilau, 13.ii.1964 (J. Smart) Royal Soc.
Geographical range. Borneo.
Habitat preference. The
species is common in lower montane forests, taken during the Mulu survey in
numbers at 1000m on G. Mulu and at 900m on the limestone G. Api. One specimen
was taken in lowland forest on the transect of the latter. The only other record
is from the lower montane zone of G. Kinabalu.
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