18mm, 15mm. The wings of the male show distinct modifications of shape:
the forewing is produced apically somewhat, and the dorsum is convex; the
hindwing is produced tornally, with a slight angle at the margin in the position
of vein CuA1. The female is similar to that of H. eleuthera, as is the
fasciation of both sexes. The genitalia are distinctive. The male has a
massively convolute corema on each valve, the uncus is asymmetric, the
pseudouncus angled. The valve costa has a central, rather obtuse angle. The
aedeagus is extremelly irregular in shape. In the female the ductus and
corrugate basal zone of the bursa are relatively short and broad, the bursa
elongate rather than spherical, and highly scobinate throughout.
Holotype .
SARAWAK:
Gunung Mulu Nat. Park, R.G.S Exped. 1977-8 Site 20 Mar-Apr. W. Melinau Gorge,
150m 422577,FEG 3, kerangas, BM geometrid slide 13001.
15mm. The wings of the male show distinct modifications of shape:
the forewing is produced apically somewhat, and the dorsum is convex; the
hindwing is produced tornally, with a slight angle at the margin in the position
of vein CuA1. The female is similar to that of H. eleuthera, as is the
fasciation of both sexes. The genitalia are distinctive. The male has a
massively convolute corema on each valve, the uncus is asymmetric, the
pseudouncus angled. The valve costa has a central, rather obtuse angle. The
aedeagus is extremelly irregular in shape. In the female the ductus and
corrugate basal zone of the bursa are relatively short and broad, the bursa
elongate rather than spherical, and highly scobinate throughout.