Grammodes arenosa

{{Short description|Species of moth}}

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| image = Grammodes arenosa.JPG

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| taxon = Grammodes arenosa

| authority = C. Swinhoe, 1902

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Grammodes arenosa is a moth of the family Noctuidae first described by Charles Swinhoe in 1902.{{cite book |last=Poole |first=R. W. |date=1989 |title=Lepidopterorum Catalogus (New Series) |volume=Fascicle 118, Noctuidae |publisher=CRC Press |isbn=978-0-916846-45-9}} It is found in Australia.