Hampson, 1895, Trans. ent. Soc. London, 1895: 296.
Wileman, 1916, Entomologist, 49: 97.
van Eecke, 1926: 38, syn. n.
Diagnosis. The wings are shades of grey, the forewings with a slight
greenish tinge, especially to the plates of raised scales extending back from
the costa antemedially and medially. The costa and, very broadly, the distal
margin are darker grey, the marginal area divided by an irregular, fine white
submarginal that is edged blackish basad. There is a dark discal spot at the
basal edge of the medial plate of raised scales.
Taxonomic note. Poole (1989) treated umbrata as distinct from
marginata, but Inoue (2001) regarded it as conspecific. In the male abdomen
the apodemes of segment eight are similar to those of coremata and the
spinivesica group discussed above. There are no coremata associated with the
basal apodemes. The ventral arm of the valve is somewhat reduced and closely
associated with the very broad dorsal arm. The harpe (or apical spur) occupies a
central position on the ventral arm. The aedeagus vesica is elongate, with one
basal cornutus and a series of increasing size on a tapering distal
diverticulum. Celama crustalis van Eecke is identical to marginata
in facies and female genitalia.
Geographical range. Himalaya, Taiwan, Burma, Borneo, Sumatra, Bali.
Habitat preference. The only Bornean specimen seen is a female taken from
the Park H.Q. area of G. Kinabalu at around 1600m: montane forest and secondary
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