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Micrurapteryx salicifoliella
''Micrurapteryx salicifoliella'' is a moth of the Gracillariidae family. It is known from Canada (Québec, Alberta, Saskatchewan, Manitoba, the Northwest Territories) and the United States (including Missouri, Ohio, Illinois, Minnesota, Alaska, Vermont, Kentucky, Michigan, Texas, California).〔(Global Taxonomic Database of Gracillariidae (Lepidoptera) )〕
The wingspan is about 9 mm. Adults are on wing in mid to late July in Illinois, with a possibly a second generation emerging in October. In California, adults can be found from April to October and in Texas in November.
The larvae feed on ''Populus'' species (including ''Populus balsamifera'', ''Populus tremuloides'' and ''Populus grandidentata'') and ''Salix'' species (including ''Salix alba'', ''Salix arbusculoides'', ''Salix babylonica'', ''Salix bebbiana'', ''Salix brachycarpa'', ''Salix exigua'', ''Salix glauca'', ''Salix integra'', ''Salix interior'', ''Salix lasiandra'', ''Salix longifolia'', ''Salix monticola'', ''Salix novae-angliae'', ''Salix planifolia'' and ''Salix scouleriana''). They mine the leaves of their host plant. The mine is found on the upperside of the leaf, sometimes covering the entire leaf area. It is a flat upperside blotch, initially greenish but later turning brown. The larva chews a hole through the bottom of the mine and exits through it to pupate. The cocoon is often spun on the upperside of a leaf, parallel to its long axis.
==References==
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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