Grammodes justa
{{Short description|Species of moth}}
{{Speciesbox
| image = Grammodes justa 1.jpg
| image_caption =
| image2 = Grammodes justa.jpg
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| taxon = Grammodes justa
| authority = Walker, 1858
| synonyms =
- Grammodes caeca Pagenstecher, 1900
- Prodotis caeca (Pagenstecher, 1900)
}}
Grammodes justa, the plain box-owlet,{{cite web |last1=Herbison-Evans |first1=Don |last2=Crossley |first2=Stella |name-list-style=amp |date=5 January 2019 |url=http://lepidoptera.butterflyhouse.com.au/cato/justa.html |title=Grammodes justa Walker, 1858 |website=Australian Caterpillars and their Butterflies and Moths |accessdate=6 December 2019}} is a moth of the family Noctuidae first described by Francis Walker in 1858.Poole, R. W. (1989). [http://www.sel.barc.usda.gov:591/spod/catalogue/search.html Lepidopterorum Catalogus (New Series) Fascicle 118, Noctuidae]. {{webarchive |url=https://web.archive.org/web/20090923061315/http://www.sel.barc.usda.gov:591/spod/catalogue/search.html |date=September 23, 2009}}. CRC Press. {{ISBN|978-0-916846-45-9}}. It is found in the northern half of Australia and Papua New Guinea.Pagenstecher, Arnold (1899). [https://www.biodiversitylibrary.org/item/45926#page/12/mode/thumb "Die Lepidopterenfauna des Bismarck-archipels"]. Zoologica. Hft. 27-29: 1-267. 2 pl. {{in lang|de}}
The wingspan is about 40 mm. The moths prefer the warmer climate of northern Australia and are considered a pest in the Northern Territory.
Image:Grammodes justa.JPG