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Lophoptera acuda Swinhoe
Gyrtona
acuda Swinhoe,
1906, Ann. Mag. nat. Hist. (7), 17:549.
Lophoptera
hyalophctea de
Joannis, 1928, Ann. ent. Soc. France 97: 333, syn. n.
Lophoptera
acuda Swinhoe;
Holloway, 1976: 19.
Diagnosis. This is a small species with brown forewings that are variably marked
with darker brown, dull pale yellow and mauvish grey. All variants have a pale
yellow triangle on the dorsum submarginally and most have a pale yellow bar
connecting the reniform to the costa. Two of the commoner forms are illustrated;
another frequent form is as in the one with the basally yellow forewing, but
with that yellow area containing a dark brown spot and another dark patch just
basal to the reniform.
The male genitalia have slender, oblong valves with a double, subbasal
harpe. The female genitalia have the appendix bursae twice as large as the bursa
and ornamented with bands of fine scobination in a herring-bone pattern; the
signum in the bursa is weak; the post-ostial invagination is small but there are
two setose flaps between it and the ostium.
Geographical range. S.E. Asia, Peninsular Malaysia, Sumatra, Borneo.
Habitat preference. The species has been taken from the lowlands to about
2000m. During the Mulu survey it was slightly more numerous in tall forest at
250m and lower montane forest at 900m on the limestone G. Api, and also at the
Long Pala site where the trap was set on a limestone outcrop overlooking
alluvial forest canopy. No specimens have been taken in heath (kerangas) forest.
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