Type species: glaucisparsa Prout.
The sole species in this genus was originally assigned to Propithex Warren
(type species alternata Warren, New Guinea), perhaps largely on grounds
of facies similarity: the forewings have a series of clear bands of pale and
dark purplish or bluish brown. This facies type is also seen in Hypenorhynchus
Hampson (type species erectilinea Moore, N.E. Himalaya). However, the
characteristics of the genitalia do not support this association.
The male of glaucisparsa has strongly eupitheciine labides, valve
setation and reduced uncus as in many eupitheciines, whereas that of Propithex
has a strong uncus, no labides, and simple, only weakly setose valves. The
valves of Hypenorhynchus resemble those of Propithex, though the
uncus is shorter, broader, and there are large structures, apically bilobed, that
would represent labides.
The female of Scintillithex has the apodemes of the genitalia
long, straight, the ductus short, expanding into an ovate bursa with a weak
signum on one side: a scobinate, lightly sclerotised patch. In Hypenorhynchus
the distal structures are similar but the ductus and bursa are more
elongate, the signum more clearly defined, strongly sclerotised, a
longitudinally lenticular plate without scobination.
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