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Lithosiopsis Hampson
Type
species: torsivena Hampson (N.E. Himalaya)
Synonym:
Codonodes
Hampson
(type species rectigramma Hampson), syn. n.
The few
species of this genus are small, with rather narrow forewings. These are medium
brown, with a series delicate, slightly angled or curved, fine, pale fasciae,
the submarginal one being distinctly biarcuate and, over its dorsal half,
associated with darker brown patches. The reniform is also delineated by a pale
surround. The male antennae are fasciculate. The labial palps are long and
slender, upcurved, the second segment tapering, the third two-thirds of its
length.
The male
abdomen has the eighth segment of the framed corematous type, but only weakly
sclerotised. The genitalia have the valves tongue-like, simple, with a small
process distal to a slight lacuna at the very base of the valve. The juxta is of
the inverted ‘V’ type. The aedeagus vesica is short but with complex lobing,
some scobinate or finely spined, with deciduous spicules on a patch in one
species.
The
female genitalia have the ostium between the seventh and eighth segments, the
sternite of the former only slightly reduced, and the ring of the latter
narrowed ventrally. The ductus is broader and more sclerotised over its ventral
part, narrowing abruptly into the shorter distal half. The bursa is generally
ovate, slightly scobinate and, in C. papuana Hampson
comb.
n.,
may contain deciduous spicules from the male aedeagus vesica (slide 19155). The
base of the bursa in torsivena has a slightly coiled appendix that tapers into the
ductus seminalis; in its distal part it has a weak, narrow band of scobination
that partially spirals it longitudinally.
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