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Platyprosopa
Warren
Type
species: nigrostrigata Bethune-Baker.
This
is a monobasic genus that has features of the male (single, tapering valve apex;
weak, exterior, basal coremata to the valve) and female genitalia (ovipositor
lobes with setae almost in a distal ring) that suggest placement within the
Acronictinae near Craniophora, rather than the Amphipyrinae. The
presence of lateral rods on the male eighth sternite, absence of the trifine
basal hair pencil, and development and pining of the aedeagus vesica are also
consistent with, if not definitive for, such a placement.
The
forewing facies has a black bar from the costa to between the reniform and
orbicular stigmata as in Craniophora; there is a strong black marginal
streak as in Craniophora but centrally rather than subdorsally.
The
valve of the male genitalia is apically acute with a small secondary spur
subapically,
ventrally. In the central lamina of the valve there is an angular sclerotisation
that contains a more lightly sclerotised zone within the angle basad; distal to
this angular sclerotisation is a small semicircular flange.
In
the female genitalia the ventral part of the ostium is bilobed. The basal part
of the ductus is smoothly sclerotised, the distal part strongly corrugate, the
corrugations extending into a reflexed, strongly sclerotised appendix bursae.
The bursa is ovoid, very finely and lightly scobinate all over.
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