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Chorsia
carjacobsi sp. n.
 11-12mm. This species, from its male genitalia, is allied to hemicyclopis,
octosema
and
the next species, but in facies resembles the first most closely. However, the
forewings are narrower and more produced apically, and the pattern, though
similar, is more uniform, less clearly defined, the stigmata not evident. The
hindwings lack the secondary sexual modification of hemicyclopis males.
The trapezoidal mark subapically on the costa is only edged white distally and
basally, lacking the broad interior edge of hemicyclopis;
the mark is relatively more elongate and irregular in shape. There is a pale
lunule subtornally in some specimens. The genitalia have the sacculus extended
well towards the apex in a slender spine as in the other species mentioned,
almost to the spur on the ventral margin that it shares with octosema.
However, the apex is produced more extensively beyond this spur than in octosema
or
rufitincta
Hampson,
and there is an additional small spur at the centre of the interior margin of
the saccular spine. The aedeagus vesica lacks cornuti.
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Chorsia
carjacobsi
(paratype) |
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Holotype
1.
BRUNEI:
300m, Ulu Temburong, rainforest, 9.2.80 (Lt. Col. M.G. Allen), BM noctuid slide 11318.
Paratypes:
2
general
data as holotype but 30.6.79 and (H.S. B[arlow])
Oct 1978; 1
SARAWAK:
Santubong Mt., 300m, 10.ix.1981, Oxford Far East Exp. (abdomen missing).
Geographical
range. Borneo.
Habitat
preference. All specimens are from lowland forest.
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