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The Brown Silver-line ''(Petrophora chlorosata)'' is a moth of the family Geometridae. It is found in Central Europe and extending to Asia Minor, North Iran, the Altai mountains, Amdo , South East Siberia and Japan. The wingspan is 31–37 mm.The length of the forewings is 15–18 mm. Quite distinct from all other Palearctic species, the forewing light brown, the lines finely whitish, proximally dark shaded, subterminal line rather straight, sometimes indistinct.〔Prout , L.B. 1912–16. Geometridae. In A. Seitz (ed.) ''The Macrolepidoptera of the World''. The Palaearctic Geometridae, 4. 479 pp. Alfred Kernen, Stuttgart.〕 The moth flies from the end of April to the end of June . The caterpillars feed on bracken. ==Notes== #''The flight season refers to Belgium and The Netherlands. This may vary in other parts of the range.'' 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Petrophora chlorosata」の詳細全文を読む スポンサード リンク
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