
Scirpophaga imparellus - A Crambid moth
The adult moths of this species have pale brown forewings, and white hindwings. The thorax loses scales easily, becoming black. The upper surface of the abdomen is white, but underneath: the abdomen has black and white bands. The moths have a wingspan of about 4 cms.
http://lepidoptera.butterflyhouse.com.au/scho/imparellus.html

''Scirpophaga imparellus'' is a moth in the family Crambidae. It was described by Edward Meyrick in 1878. It is found in Australia, where it has been recorded from Queensland, New South Wales and Victoria.
The wingspan is 23–29 mm for males and 30–38 mm for females. The forewings of the males are ochreous brown to dark fuscous. The hindwings are white. The forewings of the females are white, sometimes with pale ochreous suffusion. The hindwings are white with an ochreous-white.. more
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