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Rhynchodina Hampson
Type
species: molybdota Hampson.
Synonym:
Calesiodes
Roepke
(type species punctigera Roepke = molybdota)
syn.
n.
The
synonymy of this monobasic genus reflects the marked sexual dimorphism, males
having a prominent, dorsally directed fringe of hairs along the forewing costa
that continues from the mid-point of the costa into the wing in a crescent
shaped fold. That terminates submarginally near the centre of the wing, somewhat
reminiscent of the scale tufts of males of the genus Calesia
Guenée.
There is also a small hair-pencil in the costal area of the hindwing. The male
foretibia and tarsi are densely crested with scales, and the antennae are
bipectinate, the rami extended by particularly long setae. The labial palps in
both sexes have long second and third segments directed forwards and dorsally
crested with a ridge of scales, but are more extreme in these respects in males.
The hindwing area equals that of the forewing, and has a slight angle posterior
to CuA2, the margin anterior to this being straight for some distance in males.
The wings are diffusely fasciated with arcuate bands of greenish and violet
brown, with a row of small white dots within the approximately postmedial
greenish band of the hindwing.
The male
abdomen is very different from that of the Tinoliini to which Calesia
belongs
(p. 123), particularly the framed corematous eighth sternite with lateral rods,
the completely bifid uncus and the strongly overlapping junction between tegumen
and vinculum on each side (this does not seem to involve a paratergal sclerite).
The juxta approximates to an inverted ‘V’ structure, but with an additional
central band of sclerotisation that forms a shallow pocket with the lateral
bands just dorsal to where the valve bases meet. The aedeagus vesica is large
with several short diverticula and areas of scobination; there is a conspicuous
band of larger, thornlike spines in the distal half.
The
female genitalia have the broad, funnel-like ostium and ductus between the
seventh and eighth segments. The corpus bursae is elongate, narrow, slightly
constricted centrally. Basal to the constriction its wall is slightly thicker,
faintly scobinate; a slightly coiled appendix bursae gives rise to the ductus
seminalis just basal to the constriction. Distal to the constriction there is a
very narrow and incomplete ring of scobination at one-third.
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