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Scarlet lily beetle
The scarlet lily beetle, red lily beetle, or lily leaf beetle (''Lilioceris lilii''), is a leaf beetle that eats the leaves, stem, buds, and flower, of lilies, fritillaries and other members of the family Liliaceae. It lays its eggs most often on ''Lilium'' and ''Fritillaria'' species. In the absence of ''Lilium'' and ''Fritillaria'' species, there are fewer eggs laid and the survival rate of eggs and larvae is reduced.〔Ernst, C., et al. 2007. (Potential novel hosts for the lily leaf beetle ''Lilioceris lilii'' Scopoli (Coleoptera: Chrysomelidae) in eastern North America. ) ''Ecological Entomology'' 32: 45-52.〕 It is now a pest in most temperate climates where lilies are cultivated.
==Description==
This lily beetle belongs to the order Coleoptera, and the family Chrysomelidae, the leaf beetles. The adult lily beetle is about 6 to 9 mm (¼–⅜ in) in length, with relatively long legs and antennae. Its elytra (harder forewings) are bright scarlet and shiny. Its underside, legs, eyes, antennae and head are all black. It has large eyes, a slim thorax, and a wide abdomen.〔Ernst, C. (The Lily Leaf Beetle (''Lilioceris lilii''): an unwelcome invader. ) 2005 NALS Yearbook. North American Lily Society. pp. 29-34. Retrieved 2012-08-21.〕 Each antenna is made up of 11 segments. The eyes are notched and there are two grooves on the thorax.〔(【引用サイトリンク】 url=http://www.uoguelph.ca/pdc/Factsheets/Insect/LilyLeafBeetle.htm )〕
This lily beetle may be confused with the cardinal beetle (''Pyrochroa serraticornis''), which also has red elytra and a black underside. The wing cases of the lily leaf beetle are dimpled and are shinier and more rounded than those of the cardinal beetle, which are relatively dull, and narrower, flatter, and more elongated. The cardinal beetle also has comb-like antennae.〔(【引用サイトリンク】title= UK Safari. Lily Beetles )〕 The lily leaf beetle is herbivorous, while the cardinal beetle preys on insects.〔(【引用サイトリンク】title= Royal Horticultural Society. Red-headed cardinal beetle - ''Pyrochroa serraticornis'' )〕 The lily leaf beetle is also confused with unspotted ladybirds, but it is narrower in shape.〔
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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