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Athetis
bimacula Walker
Nebrissa
bimacula Walker, 1862, J. Linn. Soc. Lond. (Zool,) 6:194.
Diagnosis. The
forewings are pale brownish grey, only faintly fasciated, but with an irregular,
brownish marginal zone that bulges basad centrally; this bulge is a much darker
brown.
Taxonomic notes. The
species is closely related to A. terminata Hampson (N.E. Himalaya) and A.
triangulata Wileman & West (Philippines, Sulawesi). In bimacula Hampson
the clavus is broadened, triangular, and the long, irregular distal cornutus in
the vesica is diagnostic; the other taxa have a group of cornuti in this position
as does A. reclusa.
Geographical
range. Borneo, Peninsular Malaysia, Sumatra.
Habitat
preference. The
species appears to be rare, the only Bornean material seen being that collected
by A.R. Wallace in lowland Sarawak. A Sumatran male is also from the lowlands,
but the species has been taken at 600m in Peninsular Malaysia. It probably
favours open habitats.
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