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Talbot originally placed this species as a subspecies of
D. cuningputi, but is to be distinguished by the white band on the
underside of the hindwing being much straighter, and also the yellow
dusting on the lower half of the wing.
Original
description
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Jordan
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Novitates
Zoologicae
xviii,
p.587
(1911)
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"Male:
The basal area of the fore wing, above, has the
peculiar greyish tone of D. cuningputi but reaches only to the
point of origin of
Mı, more than half the wing being black. the black
costal border (as in cuningputi) does not invade the cell. There
are several exceedingly small white subapical dots, and occasionally
also feeble traces of dots at the ends of some veins. The black border
of the hind wing is more sharply defined than in cuningputi;
measures nearly 10mm. in front and narrows to a point posteriorly. The
white marginal spots are smaller than in cuningputi. The
underside resembles that of cuningputi, but the spots are deeper
yellow; the one or two small spots placed distally from the cell of the
fore wing are yellow. The median band of the hind wing is anteriorly
narrower than in cuningputi and posteriorly broader, and is so
suffused with black in front of the apex of the cell as to be nearly
interrupted; the yellow spots are smaller, the submarginal ones being
very thin transverse bars; and the ground-colour has a distinct purple
tone.
Female: The upperside of the fore wing is black for
the greater part. The white area, which has a yellowish tone, is so much
suffused with black proximally that it is reduced to a triangular patch
extending from the hind margin to the cell and hardly reaching vein
Mı;
the black outer border measures 4-5 mm. at
SM²; in some specimens the
white patch is shaded all over with black and is more distinctly yellow.
there is a subapical curved row of four pale yellow dots. The hind wing
has also a slight yellow tone. the black border gradually narrows to a
point as in the male; it is, however, as a rule narrower anteriorly than
in that sex. the white area of the fore wing beneath is less suffused
with black than above and is a little larger, there being also a spot in
the cell; there is a small yellowish subcostal dot beyond the cell and a
subapical row of five yellow spots, the margin moreover bearing some
minute white dots. The hind wing resembles that of the male in the
yellow spots being smaller than in cuningputi and the median band
reaching to the anal margin. The hind portion of this band is male and
female more distal than in cuningputi. However, the band differs
in some females from that of the male in being essentially broader,
posteriorly much shaded with yellow, and not interrupted in front of the
apex of the cell."
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