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Cremastobombycia ignota : ウィキペディア英語版 | Cremastobombycia ignota
''Cremastobombycia ignota'' is a moth of the Gracillariidae family. It is known from the United States (including Illinois, Texas, Kentucky, Maine, New York, Massachusetts, Washington and Ohio).〔(Global Taxonomic Database of Gracillariidae (Lepidoptera) )〕 The wingspan is 6.5-7.5 mm. The larvae feed on ''Elephantopus'' species (including ''Elephantopus carolinianus''), ''Helianthus'' species (including ''Helianthus annuus'' and ''Helianthus giganteus''), ''Ridania alternifolia'', ''Verbesina'' species (including ''Verbesina alternifolia'' and ''Verbesina virginica''). They mine the leaves of their host plant. The mine has the form of a rather large tentiform mine on the underside of the leaf. The loosened epidermis becomes much wrinkled in the later stages, and the mine is distinctly visible on the upper surface as a tubercular swelling. The larva, which is pale in the earlier stages, becomes dark brown just before pupation. The dense white elongate cocoon, ornamented with longitudinal ridges, is suspended in the mine at each end by two silken threads. ==References==
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