4-Triangled Noctuid (Trigonodes hyppasia).
Published March 25, 2010 | 
Image taken in mature summer grasses today at Sportsman Creek wildlife refuge. These Noctuid have 2 easily recognised dark brown triangles on each forewing.
Further reference; http://www.brisbaneinsects.com/brisbane_noctuidae/4TriangledNoctuid.htm
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