| Theria primaria (Haworth, 1809) |
| The ground colour of the forewings is reddish brown. The male subterminal and antemedial lines are slightly wavy with the areas between these lines usually being a darker brown than the ground colour. The forewing apex is rounded and there is a small discal spot towards the costal edge. The hindwings are pale whitish brown with a tiny discal spot. Females have short wings (60% of the length of the abdomen). Habitat
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| 32 - 37 mm | |
 Tidlig frostmåler Früher Schlehenbusch-Winterspanner Schwarzgrauer Breitflügelspanner Early Moth Thérie précoce Meidoornspanner |
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Synonyms and other combinations | |
| Hibernia ibicaria | Herrich-Schäffer, 1856 |
