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Helotropha leucostigma
The Crescent ''(Helotropha leucostigma)'', formerly ''Celaena leucostigma'' is a moth of the family Noctuidae. It is found in the Palearctic ecozone (Europe, Russia, Armenia, Turkestan, Siberia, Russian Far East, Mongolia, Amur, Korea, Japan, and north east China)
==Technical Description and variation==
:''See glossary for terms used''
The wingspan is . Forewing dull dark brown, faintly reddish- tinged ; the veins powdered with grey scales; the terminal area beyond subterminal line black-brown, except at apex: median area between subcostal vein and vein 1 somewhat darker than the rest of wing; inner and outer lines indistinctly double: the inner outwardly oblique, the outer bent on vein 5; claviform stigma hardly visible; orbicular stigma oblique, elliptical, of the ground-colour, with paler annulus; the reniform white or dull yellow, containing a double dark lunule with pale centre; the outer edge of this dark inner lunule is sometimes obsolete, in which case the stigma appears more solidly yellowish or white; the space between outer and subterminal lines is always slightly, often visibly, paler than the ground-colour; hindwing fuscous grey; — in the ab. ''lunina'' Haw. the outer fascia is conspicuously paler, becoming pale brown or pinkish ochreous, the median vein and veins 3, 4 at their base are white, and both stigmata are more strongly marked; ab. ''albipuncta'' Tutt is comparatively a rare form, with nearly the whole reniform stigma snow-white; — ''fibrosa'' Hbn. represents a bright reddish fulvous form, which may exist, but which no one appears to have seen; — laevis Btlr. the Japanese form, is, as usual, larger than the European, and the outer line appears rather more strongly excurved beyond cell and incurved below.〔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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