Rogenhofer (unnecessary replacement name for
All species show sexual dimorphism of the type described for the
only Bornean representative, differing in the colour and extent of the paler
edging to the male distal margins; the male hindwing is usually more produced at
the tornus, less rounded over the distal margin, and has the paler colour more
broadly along the dorsum, particularly on the underside. The black scales of the
hindwing upperside are modified to give a velvety appearance, particularly over
the distal half.
In the male abdomen, the eighth sternite is bilobed as mentioned
in the tribal account, but the tergite is only half as wide, hastate in shape,
with a less sclerotised central lacuna, and a pair of splayed apodemes at its
anterior margin. The valves of the genitalia are highly unusual, very broad over
the basal half, with a massive hair-pencil at the exterior part of the base of
the sacculus. The aedeagus vesica is moderately convolute and scobinate.
The female of the type species has genitalia as described for
the tribe. The ductus is broad and sclerotised over the basal third. The base is
very finely corrugated and rugose.
The genus is restricted to the Oriental tropics, extending to
Sulawesi and the Moluccas (L.
Poole, 1989), but no further east.
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