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Gracillina Hampson
Type
species: prosthenia Hampson.
The
facies of this monobasic genus is as described below. The male antennae are very
long (three-quarters of the forewing) and serrate throughout. The labial palps
are erect, the third segment much narrower than the second and about two thirds
of its length. The male has the anterior segments of the abdomen with posterior
fingers of long scales dorsally.
The male
abdomen has a pair of long apodemes on each of the eighth tergite and sternite.
The sternite has a transverse lacuna just posterior to the apodemes, along the
anterior edge of which is a transverse strip of hair-scales. In the genitalia
the valves are paddle-like, without processes, but with an external corema. The
juxta is a transverse bar that could represent a modified form of the inverted
‘V’ type. The aedeagus is short, the vesica small.
The
female has a small and flimsy ductus and bursa, the moderately broad ostium
opening between the seventh and eighth segments and tapering abruptly into the
narrow ductus.
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