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).

  • Forest clearings
  • Gardens
  • Hedgerows
  • Scrub
  • Woodlands
32 - 37 mm
Tidlig frostmåler
Früher Schlehenbusch-Winterspanner
Schwarzgrauer Breitflügelspanner
Early Moth
Thérie précoce

Primary host-plants

FamilyLatin nameVernacular name
RosaceaeCrataegus monogynaCommon Hawthorn
Prunus domesticaPlum
Prunus spinosaBlackthorn

Secondary host-plants

FamilyLatin nameVernacular name
Prunus spinosaBlackthorn

Synonyms and other combinations

Hibernia ibicariaHerrich-Schäffer, 1856
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