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Cabbage moth

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Kingdom
  
Animalia

Order
  
Lepidoptera

Genus
  
Mamestra

Higher classification
  
Mamestra

Phylum
  
Arthropoda

Family
  
Noctuidae

Scientific name
  
Mamestra brassicae

Rank
  
Species

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Similar
  
Mamestra, Noctuidae, Insect, Diamondback moth, Butterflies and moths

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The cabbage moth (Mamestra brassicae) is a common Palearctic moth of the family Noctuidae. It is found in Europe, Russia and across the Palearctic to Japan.

Contents

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This species varies in size, with a wingspan of 34–50 mm. The forewings are brown and mottled with a prominent white-edged stigma and a broken white sub terminal line. The hindwings are grey, darker towards the termen. The prominent spur on the tibia of the foreleg is a diagnostic feature, though is best viewed with a magnifying lens. This moth has two or three broods are produced each year and adults can be seen at any time from May to October, occasionally at other times [1]. It flies at night and is attracted to light, sugar and nectar-rich flowers.

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Technical description and variation

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The wingspan is 34–50 mm. Forewing grey-brown varied with fuscous: lines pale, dark-edged; orbicular stigma rounded, reniform large, white-spotted, or filled in with white; hindwing brownish, with a paler mark near end of vein 2. The insect varies in opposite directions;

  • -ab. albidilinea Haw is a blackish form with the reniform stigma and submarginal line white, occurring occasionally in Europe as well as in Britain; — scotochroma Rob., a local German form, is melanic, with both wings blackish, much like albidilinea, but without the white submarginal line;
  • - unicolor Tutt has all the markings dark and light, more or less lost in the fuscous suffusion, the reniform edged only with whitish;
  • - andalusica Stgr. from Spain is pale grey-brown with a faint ochreous flush, darker grey in female, with all markings obscured except the 3 stigmata, which are strikingly pale, with partial blackish outline, especially on their lower edge, the claviform sometimes grey;
  • — decolorata Stgr. from Issyk Kul and other localities in Central Asia is pale greyish brown, with the stigmata as in andalusica, but with the markings, especially the submarginal ones, not obsolete;
  • — canescens Moore from Yarkand is, judging from the figure, very close to, if not identical with, decolorata which it antedates by 10 years.

    • Larva varying in ground colour from green to brown and blackish, with broad pale spiracular line; a dorsal hump on segment 11: with dorsal and lateral stripes; dark dorsal marks, various white dorsal and lateral spots; dark 'tyre tread' marks; brown 'eye' marks, and a dark back central back stripe.; grey dorsum, pale lateral stripe and tan versum.; red-brown earth colour; grey-brown earth colour; tan dorsum, white and then yellow stripe and pink ventrum.; green, khaki, grey-brown or brown with dark spots; green-grey dorsum, yellow stripe and light green ventrum; grey green with a dark green dorsal stripe; black dorsum, yellow lateral stripe and light yellow green versum*

    1. ^ The flight season refers to the one in the British Isles. This may vary in other parts of the range.

    Recorded food plants

    See Robinson, G. S. et al.

    References

    Cabbage moth Wikipedia
    (Text) CC BY-SA


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