| Dysschema, Dysschema mariamne, Dysschema leucophaea, Gnophaela vermiculata, Composia fidelissima|
Dysschema thetis, the Northern Giant Flag Moth, is a moth of the Erebidae family. It is found from the south-western United States to north-western Mexico.
The wingspan is 85–95 mm.
The larvae feed on Asteraceae species.
Dysschema thetis Wikipedia
Dysschema thetis and Dysschema mariamne have historically been regarded as synonyms; however, the lectotype of thetis belongs to the same population historically known as D. howardi, therefore making these two synonyms, while mariamne is the correct name for the more southern species.