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Chrysolina cerealis
''Chrysolina cerealis'', the rainbow leaf beetle or Snowdon beetle, is a brightly coloured Eurasian leaf beetle. It is found in montane grassland from Norway to northern Italy, and from Ussuri in the east to Snowdonia (Wales) in the west.〔(【引用サイトリンク】title=''Chrysolina cerealis'' (Linnaeus, 1767) )〕 It lives on base-rich screes and lays its eggs on grasses such as ''Agrostis capillaris'' and ''Festuca ovina'', although it mostly feeds on the wild thyme ''Thymus polytrichus'', preferring the flowers to the leaves. The beetle is long.〔(【引用サイトリンク】title=''Chrysolina cerealis'' )〕 with elytra striped red, gold, green and blue.〔 Females are typically larger than males.〔
==In Wales==
Within Wales, ''C. cerealis'' is found at only a few sites on the western flanks of Snowdon, and perhaps in Cwm Idwal in the neighbouring Glyderau.〔 The population is thought to be genetically distinct, and the species is classified as endangered in the UK and protected under Schedule 5 of the Wildlife and Countryside Act, 1981.〔(【引用サイトリンク】title=Rainbow leaf beetle (''Chrysolina cerealis'') )〕 The species has not been found since 1980 in Cwm Idwal, and some reports consider the Snowdon population of about 1000 adults to be in "serious decline",〔 while others say that there is no evidence of a decline, but that the species may always have been rare.〔
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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