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Identification key to the Arctiidae occurring in the Dakotas
21. (19a) Forewing length <17 mm, hindwing yellow. Widespread in North Dakota. Grammia speciosa (Möschler).
21a. Forewing length >18 mm, hindwing orange-yellow. Southeast North Dakota only. Grammia virguncula (W. Kirby).
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Last updated:
07/26/04
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