Oria musculosa

The Brighton Wainscot (Oria musculosa) is a moth of the family Noctuidae.

Oria musculosa
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Class:
Insecta
Order:
Lepidoptera
Family:
Noctuidae
Genus:
Oria
Species:
O. musculosa
Binomial name
Oria musculosa
(Hübner, 1808)
Synonyms
  • Noctua musculosa Hübner, [1808]
  • ? nervosa Stephens, 1829
  • Tapinostola frumentalis Lindemann, 1883
  • ? olivina Alphéraky
  • ? dirini Alphéraky
  • Sesamia flavescens Hampson, 1902
  • Leucania flava Freyer, 1842
  • Tapinostola musculosa var. laeta Alphéraky, 1889

It is found in mainland Europe, north Africa and east across the Palearctic to Central Asia, with a separated population in South Africa.[1] It is nationally scarce in Britain where it may be confined to Salisbury Plain,[2] and was pronounced extinct as a resident species by 2013.[3]

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

O. musculosa Hbn. (= nervosa Stph., flava Frr., frumentalis Lindem., flavescens Hmps.) (48 f). Forewing whitish ochreous suffused with yellowish, the pale ground colour showing as streaks along the folds and an oblique streak from apex to end of cell, where the reniform is marked by a pale blotch with a grey spot at its lower end: veins towards termen grey-tinged; hindwing whitish, washed with grey, the veins darker; laeta Alph. is a small, pale, yellowish form from Central Asia. Larva pale greenish, with four dark lines at even distances apart, forming spots on the anal segment; head redbrown; thoracic plate yellow; spiracles black.[4]The wingspan is 28–34 mm.[5]

Biology

The moth flies in July and August.

The larvae feed internally from autumn to spring in the stems of cereal crops.[5][6] including Rye and also in Calamagrostis epigeios.

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References
  1. Markku Savela. "Oria musculosa". funet.fi. Retrieved 7 January 2013.
  2. Mike Wall. "2378 Brighton Wainscot (Oria musculosa)". Hants Moths. Retrieved 7 January 2013.
  3. Platt, John R. (February 7, 2013). "3 British Moths Extinct; Most Other Species in Decline". Extinction Countdown. Scientific American. Retrieved 12 September 2013.
  4. Warren. W. in 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 This article incorporates text from this source, which is in the public domain.
  5. Ian Kimber. "2378 Brighton Wainscot Oria musculosa". UKMoths. Retrieved 7 January 2013.
  6. Wikisource:The Moths of the British Isles/Chapter 15#302


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