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Cossedia
erateinalis
Walker
Cossedia erateinalis Walker, 1865 [1866], List Specimens lepid. Insects
Colln Br. Mus., 34: 1277.
Cossedia erateinalis
(holotype, in UM Oxford)
Diagnosis. The male is of distinctive wing shape and facies, the hindwing
with a produced and outcurved tornal angle, with darker grey grading into this
‘tail’. The forewing has the Chandica type of pattern, with pale yellow
triangles at one-third and two-thirds on the costa and at the centre of the
margin, the last with a shallower slope to the posterior. The more basal costal
triangle extends as a narrow fascia from its apex to the dorsum.
Taxonomic note. The male illustrated as this species by Kobes (1997: 35) is
much darker, the hindwing tornus much less produced. The costal and marginal
yellow markings of the forewings are smaller and closer to the apex of the wing.
It probably represents a distinct species (see below).
Geographical range. Borneo, ?Sumatra.
Habitat preference. The original specimen was taken by A.R. Wallace in
Sarawak, probably in the lowlands.
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