chloroleuca Walker comb. n.
Syntomis chloroleuca Walker,
1859, J. Linn. Soc. Lond. (Zool.), 3:183.
Syntomis detracta Walker, 1862, J. Linn. Soc. Lond. (Zool.),
6: 91, syn. n.
Syntomis basifera Walker, 1862, Ibid. 6: 92, syn.
Trichaeta diplaga Hampson, 1898: 58.
Trichaeta trizonata Hampson,
1898: 56, syn. n.
Trichaeta monoleuca Hampson,
1903, Ann. Mag. nat. Hist. (7), 11: 337, syn. n.
Geryx dohertyi Rothschild, 1910, Novit. zool., 17:
430, syn. n.
Trichaeta biplagiata Rothschild,
1912, Novit. zool., 19: 123, syn. n.
Trichaeta detracta Walker;
Seitz, 1912-1913: 67.
Diagnosis. This species is variable. The forewing has a small basal patch posterior
to CuA2 and a large distal patch that represents the fusion of the two seen in
all previous species; in some variants these are almost or completely separate.
The hindwing is usually without ornament, occasionally with a small central
white spot. In f. diplaga Hampson the transparent patches are tinged
yellowish. In the typical form (also monoleuca Hampson) the white patches
can resemble those of divisura though the distal ones are usually united,
and the abdomen can be ringed white basally and at two thirds; this form is
characteristic of Singapore and Peninsular Malaysia. Four forms are illustrated above. The species is best distinguished by the genitalia. In the female
the ostium is flanked by a diagnostic pair of flanges, with a suboval zone of
scobination just posteriorly in the lamella postvaginalis. The features of the
male have been discussed in the account of T. separabilis.
Taxonomic notes. All the diverse named forms are here brought into synonymy through
sharing the diagnostic features of the male and female genitalia mentioned. The
sister-relationship with separabilis has been discussed in the account of
that species. Trichaeta quadriplagata Snellen (1895, Dt. ent. Z.
Iris, 8: 129) may also be a synonym.
Geographical range. Borneo, Sumatra, Singapore, Peninsular Malaysia.
Habitat preference. Most material seen is from lowland localities, but
the species has not been encountered in recent surveys.
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