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Subgenus Oxyplax
Hampson stat. n.
Type species: ochracea
Moore.
The species have brown forewings, often tinged yellowish or golden, with
an oblique white or dark submarginal/postmedial fascia. There is little sexual
dimorphism.
The male genitalia have the processes of the bifid uncus and the gnathus
robust, the former well endowed with the rows of dark scales. The valve process
arises subcostally and extends obliquely downwards, simple, tapering, slender,
straight, over the interior face of the valve. The most widespread species, pallivitta
Moore, lacks the process, the only Darna to do so.
In the female genitalia (ochracea examined) the ductus is
straight and the bursa immaculate.
The only larva described is that of pallivitta (Piepers &
Snellen, 1900), mentioned in the specific account.
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