The shark (Cucullia umbratica) is a moth of the family Noctuidae. It is distributed throughout much of the Palearctic ecozone (Europe, Russia, Afghanistan, Turkestan, Mongolia), but has recently also been reported from North America, from the Magdalen Islands in Canada.
This is a fairly large species (wingspan 52–59 mm) with long, narrow wings giving a 'streamlined' appearance. The forewings are grey with brown and black streaks. The hindwings are grey in the male, brown in the female. It flies at night in June and July  and is attracted to light and a variety of flowers.
Forewing dull brownish grey, the cell and space beyond paler, dull greyish buff; a fine black line from base below cell; the usual lines and stigmata ill-defined; orbicular represented by 2 or 3 dark points, reniform by a curved black line at lower end; slight black dashes before termen above vein 3 and below vein 2, and a longer black streak above middle of vein 4; hindwing of male white, with the veins and termen narrowly fuscous; of female wholly brown, with paler base.
Recorded food plants
- Galium – lady's bedstraw
- Hieracium – hawkweed
- Hypochaeris – catsear
- Lactuca – lettuce
- Leontodon – hawkbit
- Silene – campion
- Sonchus – sow thistle
- Taraxacum – dandelion
- Seitz, A. Ed., 1914 Die Großschmetterlinge der Erde, Verlag Alfred Kernen, Stuttgart Band 3: Abt. 1, Die Großschmetterlinge des palaearktischen Faunengebietes, Die palaearktischen eulenartigen Nachtfalter, 1914
- "Robinson, G. S., P. R. Ackery, I. J. Kitching, G. W. Beccaloni & L. M. Hernández, 2010. HOSTS – A Database of the World's Lepidopteran Hostplants. Natural History Museum, London.".
- Chinery, Michael Collins Guide to the Insects of Britain and Western Europe 1986 (Reprinted 1991)
- Skinner, Bernard Colour Identification Guide to Moths of the British Isles 1984
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