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Square-spot rustic
The square-spot rustic (''Xestia xanthographa'') is a moth of the family Noctuidae. It is found in Africa, Europe, Northern Asia (excluding China) and North America.
The species is quite variable in appearance, the forewings occurring in various shades of grey or brown, with melanic forms common in parts of its range. The best identifying feature is the large, pale, squarish stigma which gives the species its common name. The hindwings are pale to dark grey with a whitish fringe. The wingspan is 30–40 mm.
==Technical description and variation==
:''See glossary for terms used''
Forewing dull brown; the upper stigmata with pale annuli, the reniform sometimes wholly pale, the orbicular round; claviform absent; hindwing ochreous white, suffused with fuscous towards termen only in male, more broadly in female; in ab. ''budensis'' Frr. the ground-colour is grey; in ab. ''elutior'' Alph. the forewings are more brightly coloured, being cinnamon brown or yellowish grey; and in ab. ''palaestinensis'' Kalchb. (full species ''Xestia palaestinensis'' (Kalchberg, 1897) ) , while the ground-colour is paler, all the markings are more distinct. — ab. ''obscura'' Tutt and ab. ''nigra'' Tutt represent the reddish black and greyish black forms, with stigmata sometimes clear, at others almost obsolete, which occur in the North of Scotland, the hindwing also being blackish; ''rufescens'' Tutt and ''rufa'' Tutt are merely colour varieties.〔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 〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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