Type species: pluristriaria Warren, India.
This genus shares with Yashmakia a general similarity of facies,
at least for some species, an enlarged retinaculum (massive, distinctly
spatulate, with a slight blister formed on the wing membrane at the apical
extremity of the retinaculum just beyond the posterior vein of the cell), and
strong coremata at the valve bases. The antennae of both sexes are also similar.
The fasciation of the wings is fine, more angular and linear. The
forewings are not angled in the centre of the margin, and the hindwings only
slightly so in the same two positions as in Yashmakia. In the male
genitalia the uncus is not expanded broadly at the base, only at the extreme
base, and the concentration of setae is more distal. Weak socii are present. The
valve lacks a setal peg but has prominent processes on the costa: a broad basal
one; a digitate one centrally. The juxta is diagnostically ‘horned’. The
aedeagus has an apical spur, and the vesica has only a small clump of
needle-like spicules on the diverticulum and some scobination on the main tube.
In the female genitalia (sundastriaria) the ductus is broad, short,
sclerotised, asymmetric. The bursa is slender, long, the basal third lightly
sclerotised, fluted, with a longitudinal zone of spines distally, the stellate
‘mushroom’ signum set centrally in concentric rings of corrugation of the
membrane, and the distal half immaculate.
The limits of the genus need revision, but it should certainly include
the Himalayan P. diffusaria Moore in addition to the type species
and those discussed below.
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