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Marcillada Walker
Type
species: rubricosa Walker,
Cambodia, N.E. Himalaya
Synonyms: Nasaya
Moore
(type species hepatica Moore
= rubricosa).
Both
species in this genus have rather narrow, rich dark brown, slightly speckled
forewings with greyer shading in places (patches towards the apex of the wing in
the type species). The hindwings are paler, duller brown with a slight angle at
CuA2 on the margin. The male antennae are ciliate. The frons has a distinct tuft
of scales, but the clypeofrons is unscaled. The labial palps are of the usual
catocaline type.
The male
abdomen has the eighth sternite much narrower than the tergite, with a pair of
short, broad apodemes at the anterior margin; distally it is distinctly
bidentate. The tergite is broader than long, with apodemes that are very broad
and shallow, almost vestigial. The genitalia have the tegumen and vinculum more
or less fused on each side, and the juxta is broad, complex, not obviously of
the inverted ‘V’ type. The valves are simple, tongue-like, with a field of
small, basally directed setae near the apex. The apex of the sacculus is
slightly lobed, the lobe opposite a small, slender, subcostal, ampullate
process. The basal part of the valve has a tongue-like process that extends
along the base of the costal zone and shows bilateral asymmetry, being longer on
the right side. The aedeagus is robust but narrow, and the vesica is small to
moderate, with loose clusters of moderate but slender cornuti.
The
female (endopolia Hampson) has the ostium set well within the eighth
segment. The ductus is strongly sclerotised and shows distinct asymmetry with a
shallow lateral lobe. The corpus bursae is a somewhat elongate oval with a
small, narrow, longitudinal and scobinate signum at two thirds.
The
biology of the type species was described by Gardner (1947). The larva is pale
green with short primary setae. The prolegs of A3 are reduced, those of A4 only
slightly so. The crochets are appendiculate as in the Bagisarinae and Cosmophila
Hübner,
but these groups feed mostly on Malvales. Pupation is in thin silk amongst
leaves.
The host
plant is Litsea (Lauraceae).
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