Hoplodrina octogenaria, the uncertain, is a moth of the Noctuidae family. It is found in the Palearctic ecozone (Europe, Russia, Turkey, Transcaucasia, Siberia, Uzbekistan, Kyrgyzstan, Altai, north Mongolia, North Korea, north China).
The wingspan is 28–34 mm. The ground colour is rich brown or tawny brown; darker in the female. The reniform and orbicular spots are darker than the ground colour and outlined in white. The darker-than-the-ground-colour median line is usually wide. The name uncertain refers to its being similar to and confused with Hoplodrina blanda and Hoplodrina ambigua. Certain identification requires dissection of the genitalia.
The length of the forewings is 14–16 mm. The moth flies in one generation from late May to August. .
- ^ The flight season refers to Belgium and the Netherlands. This may vary in other parts of the range.
|Wikimedia Commons has media related to Hoplodrina octogenaria.|
- The Uncertain at UKmoths
- Funet Taxonomy
- Fauna Europaea
- Lepiforum.de Includes photographs of genitalia.
- Vlindernet.nl (in Dutch)
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