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Tiruvaca Swinhoe
Type
species: subcostalis Walker,
India.
This
genus contains the two species described below. The facies is characteristic.
The male antennae are ciliate, and the legs are extensively crested with scales.
The male
abdomen has the eighth segment relatively unmodified, though the sternite has
lateral rods from its anterior margin. The genitalia have valves as in the Saroba
group
of species, with a narrow, tapering distal part and a complex array of processes
from the base of the costa to the apex of the sacculus. The aedeagus is slender
and the vesica is small.
The
female has the ostium within a complex, slightly folded zone of scobination at
the posterior of the eighth segment. The ductus is straight, narrow, sclerotised,
almost as long as the bursa, which has a looped basal section and a narrowly
pyriform distal section. There is no signum.
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