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Cephena Moore
Type
species: costata Moore,
India.
The
males have strongly serrate (almost narrowly unipectinate) and fasciculate
antennae. The labial palps are prominent, upturned, extending high above the
head. The dorsal part of the head bears an untidy tuft of pale, paddle-like
scales. The hindwings are dull medium brown, in contrast to the narrow, fawn
forewings. These latter have a subcostal dark streak incorporating silver
elements and extending from subbasally to just posterior to the apex on the
distal margin. Posterior to the streak is a series of oblique, diffuse, pinkish
brown bands with some black flecks and a black spot on the dorsum at two thirds.
There is more extensive black marking between the streak and the costa from the
base to two thirds.
In the
male abdomen the eighth segment is unmodified, though the sternite is smaller
than the tergite. The uncus is simple, curved, with an apical spine. The tegumen
has prominent, falcate processes on each side just distal to the valves, which
are slightly upcurved and cut off obliquely at the apex as illustrated. There is
a narrow saccus. There is a more strongly sclerotised anellar ring or juxta,
broader on each side, where it is densely and coarsely spined, the spines being
short. The vesica is narrow, simple, and has ten or so moderate cornuti in two
groups where it is attached to the aedeagus.
In the
female genitalia of the type species there is a long, narrow ductus bursae that
broadens at the ostium. The ostium is associated with the eighth segment, the
sternal part of which is scobinate, as detailed under the new species below.
The
genus contains two species described below.
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