Orthosia cruda

Orthosia cruda, the small Quaker, is a moth of the family Noctuidae. It is found in Europe, Morocco, Algeria, Tunisia, Turkey, the Caucasus, Transcaucasia, Kazakhstan, Israel, Lebanon, Cyprus and Jordan.

Male
Female

Small Quaker
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Class:
Insecta
Order:
Lepidoptera
Family:
Noctuidae
Tribe:
Orthosiini
Genus:
Orthosia
Species:
O. cruda
Binomial name
Orthosia cruda

Technical description and variation
For a key to the terms used, see Glossary of entomology terms.

The wingspan is 28–32 mm. Forewing grey brown, dusted with dark grey and reddish atoms: inner and outer lines marked by black spots on veins; submarginal line pale, indistinct; upper stigmata dark grey edged with pale and then with rufous; hindwing dull grey. Like Orthosia stabilis, which it resembles in colouration, it varies according to the amount of red shown; — thus pallida Tutt is a very pale grey form without red, but sometimes slightly ochreous-tinged; — pusillus Haw.is a darker grey form without red admixture; — nanus Haw. is like the typical form, reddish grey, but paler; — rufa Tutt is a rarer, reddish form; — lastly, ambigua Hbn. represents a dark red-brown or grey-brown insect with the lines and markings well shown.[1]

Biology

The moth flies in one generation from the end of February to mid-May.

Larva yellowish green, sometimes brown; dorsal and subdorsal lines fine, yellowish white;spiracular line broader and yellower; anal segment with a yellow cross bar; spiracles white with black rings. The larvae feed on various deciduous trees, such as oak and willow. It lives between leaves spun together.[2]

Notes
  1. ^ The flight season refers to Belgium and the Netherlands. This may vary in other parts of the range.
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References
  1. 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
  2. "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".


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